Three policemen and three gunmen have been killed following an armed attack on the US consulate in the Turkish city Istanbul. Witnesses say the attackers in a white Ford Focus car drove up to a police checkpoint outside the heavily fortified complex .
Three gunmen got out and opened fire on the police. A gun battle then ensued lasting several minutes. One police officer was killed on the spot the other two died from wounds in hospital.
Three attackers were shot dead. A fourth, believed to be the driver, sped away in car. The authorities say they are still hunting the vehicle.
It has emerged that one of the attackers was carrying a Syrian passport.