The fire started outside the building, and is believed to have been a grease fire. Investigators are focusing their efforts looking into a grease container that is kept on the outside of the building to hold old grease from the restaurant's kitchen. They are also investigating the possibility of lint from a dryer vent as a possible ignition source.
After seeing the fire, a couple of employees first tried to put it out with a fire extinguisher. When that did not work, they went back into the building to alert everyone inside.
"We were sitting there eating. Everyone was sitting around talking, watching the news and then a guy came out of the kitchen screaming and hollering to get out," recalled one customer. "By the time we got past the cash register, they were saying, 'The building's on fire! The building's on fire!' We went out the front door into the parking lot and you could see smoke already coming through the ceiling. The roof of the building already had smoke coming out."