Some workers at a business in Lehigh County heard the roof buckle, but they were able to safely get out.
The incident happened around 9 a.m. Tuesday at the Miller Brothers Garage, a car and truck repair business at 238 E. Emmaus Ave. in Salisbury Township.
Employees told police they heard the roof start to buckle and everyone got out safely.
The entire center of the roof gave way and continued buckling after the evacuation, workers said.
Workers told police the building may have to be demolished.
No injuries were reported.