FITCHBURG — An explosion leveled a section of a one-story building at 214 Lunenburg St. containing several auto-related businesses at about 5:21 p.m. Tuesday.

Everybody in the building escaped without injury, according to initial radio broadcasts.

The blast shook homes in the immediate area and broke windows up and down the street.

Lunenburg Street was closed while firefighters responded to the explosion and put out the flames.

Fitchburg Fire Department requested assistance from Lunenburg and Leominster fire departments.

Several auto-related businesses are in the building, including Victory Auto.