LAKE ELSINORE (CNS) – An investigation is underway into the operation of three illegal indoor marijuana grows at different locations in Lake Elsinore, where thousands of cannabis plants were seized.

According to the Riverside County Sheriff’s Department, the first grow was discovered on Friday afternoon after a fire department call for service in the 40900 block of Diana Lane.

Sgt. Glenn Warrington said a transformer blew at the house from electrical overload. Deputies were requested and quickly confirmed that the residence had been converted into an indoor cultivation site, he said.

“Further investigation revealed the operator of the site was operating two additional sites within the city,” the sergeant said.

Search warrants were drawn up and signed by a judge, after which deputies searched the other two homes — one in the 41000 block of Crimson Pillar Lane, and the other in the 29300 block of Royal Aberdeen, adjacent to the Links at Summerly Golf Course, according to Warrington.

A total 3,735 cannabis plants in various stages of growth were seized from the three locations, he said.

“The electrical systems within the homes were illegally altered, causing severe fire hazards,” Warrington alleged.

Lake Elsinore Code Enforcement officers red-tagged the properties, declaring them uninhabitable due to the alterations made for the grows.

No arrests have been made, but the investigation is progressing, according to Warrington.

Anyone with information was asked to contact the Lake Elsinore sheriff’s station at 951-245-3300.