A car filled with explosives stopped in front of a bus full of Revolutionary Guards in Ahmabad district, Zahedan, Sistan-Baluchestan Province at 6:30 a.m. on 14 February 2007. The car, parked in the middle of the road, forced the bus to stop. The car's driver and passengers then got out of the car and used motorbikes to leave the scene while they shot at the bus. A few seconds later the bombs exploded, killing 18 Guards. Guards commander Qasem Rezaei said, "This blind terrorist operation led to the martyrdom of 18 citizens of Zahedan." Rezaei attributed the attack to "insurgents and elements of insecurity." Majid Razavi, an Interior Ministry official, said Iranian police arrested a suspect within an hour of the bombing.