All employees at Lycoming Engines at High and Oliver streets in the city were safely evacuated when a deburring machine caught fire on the first floor about 10 a.m. Monday, city Deputy Chief Dave Dymeck said.

The fire activated a sprinkler that helped contain it, Dymeck said, adding that firefighters donned self-contained breathing apparatuses, entered the mammoth complex with hoses and had the fire out in 30 minutes.

Employees were allowed back in once the building was declared safe, Dymeck.

“This was an accidental fire,” he said, adding that fire damage was confined to the machine.

Second alarm companies from Old Lycoming Township and South Williamsport were called to the scene as a precautionary measure.