ISTANBUL:A car bomb attack on a Turkish police bus killed 11 people, seven of them police officers, in the central Istanbul district of Vezneciler on Tuesday, Istanbul Governor Vasip Sahin told reporters near the scene.
He said 36 people were wounded in the attack and three of them were in a critical condition.
A parked car packed with explosives was detonated by remotecontrol as the police bus drove by, CNN Turk said.
It broadcast cell-phone footage of a blackened and mangledvehicle on the street as vendors peered out from a souvenir shopin a district near Istanbul university.
There was no immediate claim of responsibility.
But Kurdishmilitants, Daesh (Islamic State) and radical leftists have all stagedattacks in Turkey recently.
A Reuters witness saw what appeared to be two policevehicles hit, one of them on its side next to the road.
Gunshotswere heard in the area after the blast, state-run Anadolu Agencyreported.
Broadcasters showed armed police in the street near to thesite where the blast struck.
Turkey has suffered a spate of bombings this year, includingtwo suicide attacks in tourist areas of Istanbul blamed on Daesh (Islamic State) and two car bombings in the capital, Ankara, whichwere claimed by a Kurdish militant group.