LOGANSPORT, Ind. (AP) — Two people were arrested on drug charges after firefighters reported spotting a marijuana-growing operation while putting out a northern Indiana house fire.

Logansport police say officers found 39 marijuana plants in a second-floor bedroom, along with marijuana in jars in another bedroom.

Police Sgt. Dan Frye tells the Logansport Pharos-Tribune that the growing operation included lighting on timers and irrigation and ventilation systems, but wasn’t the fire’s cause.

Two residents face felony charges of dealing marijuana and maintaining a common nuisance. Police say another resident was charged with felony battery for pushing and punching a firefighter.

Fire officials say the fire was reported about 6:45 a.m. Monday, with flames and smoke spreading through much of the house. Information on the cause wasn’t immediately released.