Firefighters responded to a two-alarm structure fire in the west Las Vegas Valley Saturday afternoon. Clark County Fire Department responded to a two-alarm fire at a building at 6275 West Sahara Avenue near South Jones Boulevard and Laredo Street just after 1 p.m. Jan. 18. CCFD said it was a roof fire on a commercial building. CCFD said the fire was knocked down around 1:30 p.m. NV Energy and Southwest Gas responded to the scene to assess the damage. There were no reported injuries and the cause of the fire is under investigation, according to CCFD.