On May 23, 2023, 20-year-old Trey Monte Walker was fatally shot outside the San Diego Central Library in the East Village neighborhood. Officers found Walker and a 24-year-old man in the plaza around 12:17 p.m.; Walker was pronounced dead at the scene from a gunshot wound to the torso, while the other victim was taken to hospital with nonlife-threatening lower-body wounds.

Investigators say the shooting began after an altercation at the library entrance over a stolen backpack. A group that included the victims confronted the suspect, 21-year-old Kenneth Chaney, who allegedly produced a handgun and fired. Chaney was arrested on May 25, 2023, and later pleaded not guilty to murder and attempted murder; by July 2024 a judge ordered him to stand trial on those charges.

Walker is remembered by his family as an amazing friend and father who left behind a 10-month-old daughter. Did anyone see what happened at the library that day or know more about the people involved?