PITTSBURGH — Allegheny County transit police say a cement truck has rear-ended a bus in downtown Pittsburgh, injuring 10 passengers on board, though there were no immediate reports of serious injuries.

Port Authority of Allegheny County police Lt. Matt Porter says the cement truck toppled over after hitting the bus about 9:50 a.m. today.

Neither driver was hurt, but nine passengers were taken to UPMC Mercy hospital and a tenth to Magee-Womens Hospital of UPMC.

County 911 dispatchers say there were no immediate reports of major injuries.

A Port Authority spokesman could not immediately be reached for further details. Transit police didn’t immediately release the drivers’ names or say whether either would be cited.