ISTANBUL — A car bomb destroyed a police vehicle near a central tourist district in Istanbul on Tuesday morning, instantly killing 11 people and wounding dozens more, Turkish officials said, the latest in a series of deadly attacks in the country.

Explosives in a parked car were detonated by remote control as a police shuttle bus passed through the historic Beyazit district during rush hour, Gov. Vasip Sahin of Istanbul said in a televised statement.

Seven of the dead were police officers, Governor Sahin said. Although there was no immediate claim of responsibility for the attack, militants from two groups Turkey is currently fighting — the Islamic State and the Kurdistan Workers’ Party, or P.K.K. — have staged major suicide attacks in urban areas this year.

Militants from the P.K.K., which has carried out an insurgency against the Turkish state for more than three decades, have claimed responsibility for similar attacks against Turkish security forces since the breakdown of a fragile peace process last July.