PITTSBURGH -- More than 200 police officers from numerous communities gathered to remember Ulf, a Pittsburgh police K-9, on Saturday.

As bagpipes played, Ulf was carried in a small, white casket into the police academy in East Liberty -- the place where he once trained to be an officer.

The 6-year-old German Shepherd was killed in the line of duty Tuesday night, after being released on and shot by 19-year-old Justin Jackson in Mount Oliver, city police said.

The dog's handler and another officer returned fire, killing Jackson on Arlington Avenue.

Funeral services for Jackson will be held in Mount Oliver Tuesday morning.