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§ 565.023 RSMo – Voluntary Manslaughter Charges and Penalties in Missouri

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Posted by Christopher Combs on July 21, 2025

565.023. Voluntary manslaughter, penalty — under influence of sudden passion, defendant’s burden to inject.

Explains when killing someone is considered voluntary manslaughter

This law defines voluntary manslaughter in Missouri—when someone causes a death in the heat of the moment or helps another person take their own life—and outlines the punishment.

1. A person commits voluntary manslaughter if they:

  • (1) Kill someone in a way that would normally be second-degree murder, but they did it under sudden passion caused by something serious enough to make them lose self-control; or
  • (2) Knowingly help someone commit suicide.

2. If claiming sudden passion, the defendant has the responsibility to raise that defense during the case.

3. Voluntary manslaughter is a class B felony.

View the full statute here

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