BERTHOUD, Colo. (CBS4) – Berthoud firefighters responded to a two-alarm house fire at around 7 p.m. Saturday. They say no one was inside the home.

(credit: CBS)

Investigators say the home was fully involved, and the flames spread to the attic and to the home. There is significant damage to the garage and home.

(credit: CBS)

Crews stayed at the property overnight to make sure the fire didn’t rekindle.

It’s not clear what caused the fire.