VIDEO: Officials say crews have control of a massive three-alarm fire at a Phoenix supermarket. The fire was reported in the back room of a north Phoenix Safeway store just after 6 p.m. on Wednesday. An employee of the store had reportedly called 911. No injuries have been reported in the blaze and fire officials say, "it’s too early to determine the cause of the fire or if weather played a factor in the roof collapse." As crews arrived on the scene, they made a "fast aggressive" attack on the fire and began search and rescue operations while they cleared the store of employees and shoppers. Fire officials say during this time, a section of the roof collapsed which forced crews to pull back.