At least four fire trucks and an ambulance descended on Sterling Memorial Library around 1:30 p.m. Friday afternoon after the library was evacuated due to a reported fire.

The fire was small and most likely caused by construction on the roof of the main building, according to three firefighters on the scene.

Those who were in Sterling at the time waited by the Women’s Table, York Street and Wall Street for the fire to be put out.

Meanwhile, a fire engine parked between Sterling and Beinecke libraries caused traffic to back up on Wall Street on Friday afternoon.