"After the car bomb attack, the insurgents also started a clash with Afghan forces in the area, they killed three policemen and wounded seven others," the official said on condition of anonymity.

Kandahar police spokesman Jamal Nasir Barakzai told Sputnik that the attack took place near a police checkpoint in the Joy Lahore area.

The Mazda car was identified by police at the time of the attack, it exploded after police opened fire.

Barakzai added that only two policemen were injured in the attack.