CLEVELAND — A nighttime car chase in Cleveland that ended on a schoolyard where more than 100 shots were fired at the suspect’s vehicle appeared to be over when an officer opened fire again, a prosecutor said in announcing charges against the patrolman and five police supervisors.

Cleveland patrol officer Michael Brelo stood on the hood of the suspect’s car and fired at least 15 shots through the windshield — five fatal — at the two unarmed people inside, Cuyahoga County prosecutor Tim McGinty said Friday.

Driver Timothy Russell was shot 23 times. Passenger Malissa Williams was shot 24 times. No gun was found on them or in their vehicle. The chase had begun when an officer thought he heard a gunshot from a car speeding by the police and courts complex, jumped into his patrol car and radioed for help. Police don’t know why Russell didn’t stop.