Other Business Las Vegas, NV – Attic fire in commercial building contained by sprinkler system; Firefighters extinguish blaze January 26, 2019 viking210 Fire sprinklers prevented a blaze in the attic of a downtown commercial building from spreading before firefighters could extinguish it, Las Vegas Fire & Rescue officials said. The cause of the fire is under investigation, officials said. The fire was initially reported Thursday at 4:10 a.m. burning along some railroad tracks and extending to the rear of a large commercial building in the 800 block of Bonanza Road, officials said. A set of wooden stairs was on fire, but it appeared the fire was outside the building, officials said. About 20 minutes later, a fire alarm was received from the building location, indicating the fire might have gotten inside, officials said. Firefighters forced their way into the building and found it full of smoke, officials said. Fire was discovered in the attic, but it was being held in check by the sprinkler system and was quickly extinguished, officials said. Investigators believe the fire started around the wooden stairs at the rear of the building, officials said. They also received information that shortly before the fire was reported, a homeless woman was picked up nearby by an ambulance and taken to a hospital with burns, officials said. Investigators a looking into whether she has a connection with the fire, officials said.