Several fire crews responded to Martin Towers in Bethlehem Thursday night, but couldn't find a fire.
Crews at the scene told 69 News a small amount of smoke was seen from the roof of the building.
But they say crews searched each floor and couldn't find any flames.
There's no word on what may have caused the smoke.
The response by emergency crews closed 8th Avenue from Lyons Road to Route 378 for several hours.