Police Chief John Welter said two officers were placed on paid leave after one of them fatally shot Manuel Diaz, 24, Saturday afternoon. He said the officers approached three men who were acting suspiciously in an alleyway when they ran away. One of the officers chased Diaz to the front of an apartment complex where the shooting occurred. Welter would not say what led the officer to shoot Diaz, citing an independent investigation by the county’s district attorney office. Police said Diaz was a known gang member.