A small bomb went off in the car park of a local government office in Istanbul early Wednesday, police said. Two people, including a police officer, were hospitalized. Police said the device was a percussion bomb, designed to make a loud noise but cause minimal damage. It went off outside the local governor's office in the mainly residential district of Bahcelievler, on the European side of the city. A police officer and another man were hospitalized, the Anatolia news agency reported, without elaborating. There was no immediate responsibility claim. Militant Kurdish, leftist and Islamic groups however, have carried out bombings in the city in the past.