Investigators discovered some marijuana growing equipment at a Santa Monica home where a fire broke out early Feb. 10, police said.

Two tenants were released from custody after police determined that they had prescriptions for medical marijuana and the proper documentation for growing the medicinal drug, Santa Monica police Sgt. Jay Trisler said. The two tenants, who had exited the home prior to the arrival of firefighters, suffered no major injuries, police said.

Santa Monica firefighters were assisted by 71 Los Angeles Fire Department firefighters after receiving a call at 6:43 a.m. regarding a residential fire in the 700 block of North Kingman Avenue in Santa Monica, near the border with Pacific Palisades. Three LAFD rescue ambulances, two arson units and two helicopters were also called to the scene, LAFD spokesman Brian Humphrey said.

Fire crews attacked flames that had taken hold of a combination basement and crawl space below the three-story hillside home, where the blaze spread upward through walls, igniting dead leaves on the roof, Humphrey said.

Firefighters fully extinguished the fire in 77 minutes, he said.

The cause of the blaze and estimated damage was under investigation by the Santa Monica Fire Department.