A heavy-duty tow truck crashed into a Hunterdon County pizzeria Monday night, sparking a large fire.

Frenchtown officials say that the truck plowed into Galasso’s Pizzeria on Bridge Street around 10:40 p.m. and caught fire, which spread to the pizzeria and then to the Frenchtown Café.

No one was inside either restaurant at the time. The driver of the truck had minor injuries and refused treatment by medical personnel, officials say.

A tenant who lived in an apartment above the pizzeria was able to get out without injury, thanks to the efforts of some good Samaritans.

Officials say that both businesses were badly damaged. It was unclear why the truck left the roadway.

The crash is under investigation.