(Las Vegas, NV) — A fire at a southwest valley home led to the discovery of a marijuana grow house.

Clark County firefighters responded to the blaze around 9 p.m. Tuesday near Jones and Robindale Road.

The fire was quickly put out, but crews found a grow house operation on the second floor.

Narcotics detectives were called in.

No one was home at the time, and the fire caused about $100,000 in damage.

The cause is still under investigation.