Suicide bombers struck a busy market in southern Afghanistan on Wednesday, killing at least 21 people and leaving dozens wounded, authorities said. The bombings injured at least 50 others, said Abdul Razaq, a provincial police chief. A first bomber on a motorcycle detonated his explosives near a restaurant in a busy market in Kandahar city, according to the police chief. The market is crowded with civilians and truck drivers, most of them transporting NATO supplies. When residents flooded the area after the first attack, a second attacker blew up his explosives in the crowd, causing more casualties, Razaq was quoted as saying by CNN.