LAS VEGAS (KLAS) — Clark County firefighters found flames and heavy smoke when they arrived at a building fire in southeast Las Vegas Tuesday morning.

The fire call was received around 3:20 a.m. for a two-story building at 4795 Sandhill Road near Tropicana Avenue. Firefighters said the blaze started in the building and traveled to the attic forcing fire crews to attack it from the roof which portions of eventually collapsed. Extra fire units were called to the scene. In all, 68 firefighters fought the blaze.

“In this case, this structure had exterior windows all the way around the exterior of the second floor. They were able to break out some glass near the attic space and were able to put it out with a truck company,” explained Deputy Fire Chief Thomas Touchstone of the Clark County Fire Department.

The cause of the fire is under investigation and no estimate on damage has been released.

The fire was put out around 5 a.m. but Sandhill will remain closed from Tropicana to Harmon Avenue while crews remain at the scene to attend to hot spots.

No injuries were reported.