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Murder / Homicide Lawyer Buffalo Grove, IL

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Last Updated: August 31, 2026

Buffalo Grove, IL Murder / Homicide Lawyer. A homicide case in Illinois can be well underway before anyone is arrested. Detectives may already have interviewed witnesses, searched phones, collected surveillance video, compared firearms evidence, and settled on a theory of what happened. When officers finally ask for your version, they may be testing it against a theory they have already built.

Do not try to talk your way out of a murder investigation. Get legal help first. People accused of murder or another homicide offense in Buffalo Grove, IL can turn to Combs Waterkotte for defense throughout the Illinois court process. Our Buffalo Grove, IL criminal defense lawyers move quickly to protect clients during investigations, arrests, detention hearings, negotiations, and trials. Contact our team at (314) 900-HELP to arrange a free and confidential case review.


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On this page:

  • The differences between first-degree murder, second-degree murder, felony murder, and related homicide offenses
  • What prosecutors must prove in an Illinois murder case
  • Prison sentences and firearm enhancements
  • Defenses to murder and homicide charges
  • What to do if police believe you were involved in a homicide
  • What to expect following a Buffalo Grove, IL murder arrest
  • How Combs Waterkotte investigates and prepares a homicide defense


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If Police Are Investigating You for Murder in Buffalo Grove, IL

A murder investigation can put you at risk long before police arrest you or officially call you a suspect. Detectives may contact you as a witness, ask you to come to the station voluntarily, request access to your phone, or tell you they only need to clear up a few details. How detectives describe the conversation may have little to do with the role they believe you played.

When officers are asking about a death and may suspect your involvement, talk to an attorney before you answer them. Do not assume you can explain a misunderstanding, correct someone else’s story, or prove your innocence by cooperating. Statements that seem harmless at the time can become important later when detectives compare them with video, phone records, witness accounts, or forensic evidence.

Bringing in counsel early allows the defense to protect evidence while the investigation is still active. That may mean identifying surveillance footage, locating witnesses, preserving messages or records, documenting injuries, reviewing search warrants, and determining what investigators have already seized. Some of the most valuable work in a homicide defense takes place before anyone appears in court.

If police have already arrested you, keep the details between you and your attorney. Conversations with officers, cellmates, or anyone on a jail phone may be used against you. The State is already building its case. Your defense should be doing the same.

Murder and Homicide Charges We Handle in Buffalo Grove, IL

“Homicide” broadly refers to one person causing the death of another. Prosecutors choose the charge by looking at the person’s alleged state of mind, the cause of death, any related felony, and facts involving justification, provocation, recklessness, controlled substances, or driving.

Our Buffalo Grove, IL homicide defense team handles allegations involving:

  • First-degree murder: Intentionally killing someone, causing a death while knowing your actions were likely to kill or seriously injure someone, or causing a death during certain serious forcible felonies.
  • A felony-murder allegation: When prosecutors blame a person for a death tied to a qualifying felony, even though that person did not personally deliver the fatal injury.
  • Murder in the second degree: An intentional or knowing killing reduced from first-degree murder because of serious provocation or an unreasonable but genuine belief in the need for deadly force.
  • An attempted first-degree murder charge: Trying to kill someone and taking a real step toward doing so, even though the person survives.
  • Helping or taking part in another person’s crime: A person can face an Illinois murder charge without firing the weapon or personally causing the death. Prosecutors may claim the person helped plan, encourage, or carry out the crime.
  • Involuntary manslaughter and a reckless homicide charge: Unintentional deaths that prosecutors say resulted from reckless conduct. When a vehicle is involved, the charge may be reckless homicide rather than involuntary manslaughter.
  • Illinois drug-induced homicide: A case in which the State connects an illegal drug delivery to another person’s fatal overdose.
  • Additional offenses tied to a homicide case: Murder-for-hire charges, soliciting a killing, conspiring with others, concealing a death, weapons charges, and accusations of obstructing the investigation.

The State still has to prove the required elements with evidence the court allows the jury to consider. In some cases, the real fight is over identity. In another, the dispute may involve intent, cause of death, self-defense, accountability, or the felony used to support a felony-murder charge.

Elements of First-Degree Murder in Buffalo Grove, IL

Illinois defines first-degree murder in 720 ILCS 5/9-1 in three main ways. The State may try to prove that the accused:

  • acted with the intent to kill or cause great bodily harm, or with knowledge that death would occur;
  • understood that the conduct created a strong chance of death or serious injury; or
  • was committing or attempting a forcible felony when the accused or another participant caused someone’s death.

Intent and knowledge are often argued from circumstances: the words used, the weapon involved, the number and location of injuries, earlier communications, conduct before the incident, and what happened afterward. Circumstantial evidence does not always lead to only one conclusion. A defense lawyer can challenge the distance between the actual proof and the conclusions prosecutors want jurors to draw.

Second-Degree Murder in Buffalo Grove, IL

A second-degree murder charge in Illinois works differently from a basic lower-level form of first-degree murder. The State must still establish the elements of intentional or knowing first-degree murder. The offense becomes second-degree murder when the defense proves one of two mitigating circumstances:

  • Serious provocation caused the person to act under a sudden and intense passion; or
  • The accused honestly, but unreasonably, believed that deadly force was necessary in self-defense or defense of someone else.

These rules are set out in Illinois law under 720 ILCS 5/9-2. The defense does not relieve prosecutors of their duty to prove the intentional or knowing killing beyond a reasonable doubt. If the evidence supports self-defense, the State may have to disprove legal justification as well.

Second-degree murder cases often turn on details that may seem minor at first. Earlier threats, visible injuries, weapons, witness observations, emergency calls, and the sequence immediately before the death may shape the charge and defense. Those facts may support self-defense, second-degree murder, another homicide charge, or an argument that no crime was committed at all.

Penalties for Murder and Homicide in Illinois

Under Illinois law, a standard first-degree murder sentence runs from 20 to 60 years in prison, as explained in Illinois law governing first-degree murder sentences. Certain aggravating facts can raise the range to 60 to 100 years or result in life without release. First-degree murder is not eligible for probation or conditional discharge. The Illinois General Assembly’s sentencing provision lists these sentencing ranges and restrictions.

Illinois firearm enhancements can increase a murder sentence by decades. Illinois law provides for an additional 15 years when the person was armed with a firearm, 20 years when they personally fired it, and 25 years to natural life when the shooting caused great bodily harm, permanent disability, permanent disfigurement, or death. Depending on the circumstances, prosecutors may file additional Illinois firearm offenses, in addition to the homicide count.

  • Attempted murder in the first degree: Usually sentenced as a Class X felony, with a standard range of 6 to 30 years. Special aggravating circumstances and firearm findings can increase that range substantially.
  • Second-degree murder: A Class 1 felony with a special prison range of 4 to 20 years under Illinois law for Class 1 felony sentences.
  • Illinois involuntary manslaughter and reckless homicide: Under Illinois law on involuntary manslaughter and reckless homicide, most cases are Class 3 felonies punishable by 2 to 5 years in prison. Certain circumstances can raise the charge to a Class 2 felony, which carries 3 to 7 years in prison. This can happen in some cases involving multiple deaths, peace officers, emergency responders, construction zones, school crossing guards, or family or household members.
  • Sentencing for drug-induced homicide: Illinois drug-induced homicide law covers unlawful deliveries of certain controlled substances when the recipient dies after taking them. The offense is a Class X felony, and certain cases carry 15 to 30 years, with an extended range of 30 to 60 years.

Defenses to Murder and Homicide Charges in Buffalo Grove, IL

No single defense applies to every murder or homicide accusation. The defense has to fit the specific charge, the State’s evidence, and the facts counsel can verify outside the police reports. Some defenses and factual disputes are more common than others.

Self-Defense or Defense of Another Person

Under the Illinois use-of-force statute, someone may use force when they reasonably believe it is needed to stop an immediate threat of unlawful force against themselves or another person. Deadly force is allowed only when the person reasonably believes it is necessary to prevent death or great bodily harm to themselves or another person, or to prevent certain serious felonies.

A self-defense argument has to be supported by the circumstances before and during the use of force. The analysis may involve injuries, earlier threats, the presence of weapons, where each person stood, what the accused knew, witness testimony, and the exact sequence of events.

The Wrong Person Was Accused

Identification evidence may be mistaken. A witness may have seen clothing, build, or movement rather than a face. A digital record may connect a phone to an area but not establish that the accused was carrying it. The evidence may point toward another person with a reason and ability to commit the offense. A defense investigation can test the State’s identification against alibi evidence, video, timestamps, records, and witnesses the police overlooked.

The Evidence Does Not Prove Intent or Knowledge

A fatal result alone is not enough to establish the intent required for first-degree murder. The State has to establish the required intent or knowledge unless its case is based on felony murder. Evidence may instead support a lack-of-intent defense including an accidental act, recklessness rather than intent, or another explanation for the fatal injury. Medical and forensic findings may also undercut claims about intent.

Causation Is Unclear

Prosecutors have to prove that the accused person’s actions caused the death. Causation may be contested when multiple people or injuries were involved, treatment was delayed, substances affected the person, another event intervened, or the deceased had an existing medical problem. Hospital records, autopsy findings, and outside expert analysis may challenge the State’s timeline or cause-of-death theory.

Police Violated the Accused Person’s Rights

The defense may challenge warrants, device searches, searches of homes or cars, police questioning, identification procedures, and arrests that violated constitutional protections. Device searches require close scrutiny because a single phone may contain communications, images, browsing activity, location data, and a long record of someone’s private life. The defense should examine police searches of phones in Illinois and what investigators are allowed to access.

Mere Association Is Being Treated as Participation

When several people are involved, the State may treat being present or knowing someone as proof of taking part. Counsel can dispute whether the person had the necessary intent, helped commit the crime, left or withdrew, or simply happened to be there. In Illinois felony-murder prosecutions, counsel can contest the felony used as the foundation, its relationship to the death, and the State’s account of causation.

Steps to Take If Police Connect You to a Buffalo Grove, IL Murder

Do not answer questions about the death without an attorney. Fear, lack of sleep, and pressure can cause even innocent people to misspeak or fill in details they do not actually remember. Small inconsistencies can later be presented as evidence of guilt. Clearly invoke your right to silence and request counsel before any questioning continues.

Do not voluntarily agree to let police search. Do not physically interfere if police present a warrant or proceed with a search. You can decline voluntary consent and let your lawyer examine whether the search was lawful afterward.

Preserve your messages, accounts, and records. Deleting messages, accounts, photographs, location history, or posts can destroy evidence that helps the defense and can create a new allegation. Preserve what exists. Avoid discussing testimony with witnesses, and remember that conversations from custody are generally monitored.

Give your attorney the complete account. Names, prior threats, injuries, missing property, cameras, receipts, rideshare records, and people who saw you before or after the incident may all matter. Keep the information within the attorney-client relationship instead of posting or texting about it.

What to Expect After a Murder Arrest in Buffalo Grove, IL

After a first- or second-degree murder arrest, prosecutors can ask the court to keep the accused person detained while the case is pending. The accusation is severe, but detention still requires a court ruling under Illinois law. The court must review a State petition, apply Illinois’s detention standards, and decide whether any release conditions could address the risk prosecutors identify. The current procedure appears in 725 ILCS 5/110-6.1.

The case may then proceed through a preliminary hearing or grand jury indictment, arraignment, discovery, motion practice, negotiations, and trial. Discovery in a murder case can include massive police files, surveillance recordings, device data, forensic testing, medical records, and expert reports. A full review takes time, yet some work cannot wait, including preserving evidence, challenging questionable statements, finding witnesses, and retaining experts before conditions change.

The decisions made in the first days after an arrest can affect the rest of the case. Your statements, responses to search requests, conversations with other people, and preservation of evidence can all become important. This overview of the first steps after a felony charge in Buffalo Grove, IL explains which actions may help protect the case.

How Combs Waterkotte Prepares a Homicide Defense in Buffalo Grove, IL

Combs Waterkotte has represented clients in more than 10,000 criminal matters and has earned over 500 five-star Google reviews. Clients have access to former prosecutors, attorneys with law-enforcement experience, our own investigator, and qualified outside experts when the case requires them. Those resources are useful in a homicide case because the prosecution has its own investigators, laboratories, analysts, and experts working from the start.

Preparing the defense can involve:

  • communicating with investigators before the client submits to questioning or turns themselves in;
  • collecting and reviewing the complete discovery file instead of accepting the State’s summary;
  • reconstructing events through surveillance, communications, records, and first-hand witness accounts;
  • testing warrants, police interviews, lineups, and evidence handling against the legal rules officers had to follow;
  • having qualified professionals independently examine the State’s scientific, medical, digital, and weapons-related claims;
  • preparing motions that narrow or weaken the State’s proof;
  • evaluating negotiations without assuming a plea is the only workable answer; and
  • preparing the case for a jury from the beginning.

Preparing seriously for trial can change how prosecutors, witnesses, and experts approach the case. Weak witnesses have to be found. Expert conclusions have to survive examination. The prosecution’s sequence must make sense down to the minute. Prosecutors recognize when opposing counsel has prepared to test the case in open court.

We also defend the following charges in Buffalo Grove, IL:

Talk to a Murder / Homicide Lawyer in Buffalo Grove, IL Now

Investigators are not required to tell you that they view you as a suspect. Detectives may ask for an informal conversation or access to your phone while avoiding any clear statement about your status. Speak with counsel before you answer questions or agree to a search.

Call Combs Waterkotte at (314) 900-HELP. You may also contact us online for a free, confidential consultation. A Buffalo Grove, IL murder and homicide lawyer from our team is available 24 hours a day.

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