Joseph Addison, 42, was fatally shot on December 27, 2021, at an apartment complex on Tyrell Avenue on Youngstown’s West Side. Three other people were wounded in the same incident.

The investigation led to arrests in connection with the shooting. Prosecutors allege Marquez Thomas fired the shots that killed Addison and that his sister, C’Mone Thomas, supplied the firearm. Defense attorneys have argued the complex was experiencing ongoing gunfire and say Marquez Thomas fired warning shots in response to continuous shooting at his sister’s apartment.

The case raises questions about who fired which rounds and how to determine responsibility when multiple people and active gunfire are involved. If anyone saw the shooting or has information about activity around Tyrell Avenue on December 27, 2021, please come forward.