What is a transit cop doing conducting probation searches?
No one handcuffed, unarmed, and lying face down on the ground to shoot in the back?
Nelson said the shooting happened after several BART officers went to an apartment in a modern complex of three-story buildings to perform a search for a man suspected of committing a series of robberies on BART property.
According to law enforcement sources, the suspect was already in custody, having been arrested recently.
The officers - all of whom wore bulletproof vests, but were not part of a SWAT team - forced entry into the apartment, Nelson said, before "one officer fired a shot which fatally struck another officer.