The campaign headquarters for congressional candidate Jon Golnik in Westford. (WBZ-AM)

A commercial building in Westford was destroyed by an overnight fire.

The fire started around 11:30 Tuesday night.

It went to four alarms before crews from Westford and nearby communities were able to get it under control.

There’s no word on a cause.

The building on Littleton Road was also housed the campaign headquarters for republican congressional candidate Jon Golnik.

He tells WBZ NewsRadio that the fire will not disrupt his campaign. They have set up a new campaign headquarters down the street.

Listen to Carl Stevens’ extended interview with Jon Golnik about the fire here.