A suicide attacker detonated a bomb Saturday on Istanbul's main pedestrian shopping street, killing at least four people and wounding dozens of others, including 12 foreigners, according to officials.
Istanbul Governor Vasip Sahin said the explosion occurred outside a local government office on Istiklal Street, which is also home to cafes, restaurants and foreign consulates.
Sahin gave an initial death toll of four and later said one of the wounded victims died in the hospital.
Two government officials including the health minister put the number of fatalities at four.
There was no immediate claim of responsibility for Saturday's attack.
