FLATBUSH - Fire officials are investigating the cause of a blaze Tuesday in Flatbush.Officials say the fire broke out on the first floor of a three-story building on Coney Island Avenue and Avenue H. Urdu Bazzar, which was on the floor, was gutted in the blaze. The owner of the store says the fire is unfortunate but is glad no one was hurt. He says he and his brothers will come together and fix the damage.There are apartments located above the store, but officials say they were not damaged in the blaze.