Multiple fire crews responded to a Thursday morning blaze at a restaurant in the central business district of downtown Bellevue. Emergency officials say the fire, on the exterior of the restaurant, was extinguished before it could spread to the inside of the building. Crews responded to the Nibbana Thai restaurant at 527 108th Ave. NE at about 6:45 a.m. after receiving reports of smoke and flames. No one was inside the restaurant at the time, and no one was injured. The cause of the blaze is under investigation.