Tulare detectives are trying to piece together what led to an officer-involved shooting Monday afternoon near Tulare First Baptist church.Witnesses say a man attacked a police officer. Others say police used "excessive force” to combat a mentally ill man.The incident started just after 4:30 p.m.when a bus driver called police to he'd been assaulted. Police didn't release whether the bus driver was employed by the city or a school district.