The officers responded to the bus in the 1100 block of Cloverdale Rd., where Moreno reportedly was assaulting the bus driver and another rider, MTA spokeswoman Paulette Austrich said.
Moreno, of the 5400 block of Park Heights Ave., was being combative and had a heart attack when four officers attempted to restrain him, Austrich said. Moreno was revived through CPR and taken to Maryland General Hospital, but once there he had another heart attack and died.