Sean Michael Bialas, 23, was found dead at his Kenosha, Wisconsin home on the evening of February 11, 2017. Kenosha police responded to a call about 7:30 p.m. and discovered Bialas with a single gunshot wound; he was pronounced dead at the scene.

Bialas had been left quadriplegic after a November 2014 cell extraction at the Kenosha County Jail, when correctional officers removed him after he threatened self-harm. His mother, Karen Bialas, said he struggled with depression and isolation after the injury.

Investigators identified a 15-year-old cousin as involved in the shooting. Prosecutors described uncertainty early on about whether the death was intentional, reckless, or negligent; charges filed included negligent homicide, possession of a dangerous weapon by a person under 18, and obstructing an officer. The Kenosha County District Attorney’s Office characterized the shooting as accidental, and a waiver hearing was scheduled to consider trying the teenager as an adult.

If anyone knew Sean, his movements that night, or has information about the shooting, please share what is known.