A double-decker bus carrying Greek tourists caught fire Tuesday in front of a hotel, and police said at least 36 people trapped inside were killed. A travel agent and a witness said a man set the fire.

The bus was about to take the tourists, who were on Easter vacation, on a sightseeing trip around Istanbul. At least five of the dead were children, said a police official who spoke on condition of anonymity.Ana Gotsis, the manager of Agelos Tours, which organized the trip, said in Athens that "a Turkish man got on the bus, poured gasoline on the seats and set it on fire." She said he was hospitalized with burns.