Matthew Beck, 36, was shot and killed during an afternoon dispute at about 3:25 p.m. on August 26, 2024, at an apartment complex on the 22000 block of Santa Clara Street in Hayward, California. Family described him as the person who held them together and the father of three boys. The conflict began after his girlfriend went to a neighbor’s apartment to shower; Beck, armed with a knife, confronted that neighbor, Shawn Moayer. Moayer retreated into his residence, retrieved a firearm, and shot Beck. Officers found Beck with gunshot wounds and he was pronounced dead at the scene.

Detectives identified 34-year-old Shawn Moayer as the suspect. He fled and remained at large for over a week before being arrested on September 4, 2024, at a Union City residence. Investigators determined Moayer’s adoptive father, 59-year-old Houman Moayer, had concealed him; Houman Moayer was arrested the same day and charged as an accessory after the fact. What details about the confrontation or about witnesses might help explain the moments before the shooting?