A construction company co-owned by Vermont Lt. Gov. Phil Scott has been destroyed in a massive fire that engulfed the building Friday night, spurring explosions.

Montpelier Fire Lt. Dana Huoppi says authorities do not believe anyone was inside the DuBois Construction Inc. building when the fire started about 8 p.m. It was still burning after 11 p.m.

The building is in Middlesex, just west of Montpelier.

The Burlington Free Press reports that Scott and co-owner Don DuBois were at the scene as firefighters from more than a dozen fire companies battled the blaze.

Middlesex Assistant Fire Chief Gary Webster told the newspaper there were multiple explosions.

DuBois Construction was founded in 1946. Scott became co-owner with DuBois about 25 years ago.