A call for a fire at a Worcester home Saturday afternoon led to the discovery of roughly 900 marijuana plants and a grow house, according to authorities.

A Worcester police spokeswoman said authorities were first called to the home at 225 May St. Saturday for a report of a fire.

No smoke or fire was coming from the home when authorities arrived. Investigators discovered there was condensation inside the two-story home caused by a marijuana grow operation, police said.

“There were approximately 900 plants inside along with a makeshift sprinkler system, fertilizer and heat lamps,” police said.

The Worcester Police Department Vice Squad confiscated the plants which were in various stages of growth.

Authorities continue to investigate the discovery.