Authorities say they discovered a budding marijuana-growing operation after residents of a Lincoln house called police to report the theft of marijuana pipes.

The Lincoln Journal Star reports that officers were called to the house Saturday morning by residents who reported that two people, one of them armed with a handgun, forced their way inside and took two hookah pipes.

Officers questioning the residents noticed marijuana, paraphernalia and several bottles of fertilizer. They also saw light shining from under a door barred with a padlock and a power cord snaking into the room.

After getting a search warrant, police say they found three marijuana plants, grow lights and other equipment.

Police arrested a 19-year-old man on suspicion of manufacturing marijuana and ticketed his roommates for having marijuana paraphernalia.