ROCK HILL — Four underage drinkers were cited after police broke up a party in Rock Hill early Sunday, stumbling upon a floodlight, shotgun and empty bottles of rum.

Officers rounded up and arrested Andrew Steven Colley, 19; Curtis Jerome Hemphill, 20; and Tyler Scott Owens, 19, all of Rock Hill, and Clayton Glenn Razo, 19, of York. They were charged with possession of beer under the age of 21. Colley also faces additional charges for discharge of a firearm in city limits.

Around 2:30 a.m., police were sent to Baylor Drive, off Mount Gallant Road, after an anonymous caller tipped them off to a loud party at a house that was “on a hill,” a Rock Hill Police report states. Police found a floodlight in the backyard of the house and heard people talking inside the closed garage.

An officer heard four gunshots coming from the woods behind the home, the report states.

When they went to the front door, Colley walked around the corner of the house and dropped a black shotgun. Police detained him and could smell alcohol on his breath, the report states.

After knocking on the front and garage doors with no answer, police spoke with the homeowner, who was an hour away, over the phone. She told police her son, Owens, should be inside and gave them permission to go into the house. While walking in the backyard, they found Hemphill, who admitted that he had been drinking inside the house. Officers also found a 15-year-old girl hiding in the backyard shed.

Razo unlocked the back door and was arrested. He admitted to drinking alcohol before saying he was asleep and didn’t hear officers knocking.

Inside the house, police found empty bottles of rum, beer and Four Loko strewn throughout the house. They also smelled burnt marijuana in the garage.

The homeowner’s boyfriend arrived at the house and said the shotgun he gave his girlfriend was missing. Police were unable to find the person Owens said might have stolen the gun.

Colley, Razo and Owens were released from jail on Sunday on $470 bonds each. Colley was released Sunday on a $1,570 bond. The 15-year-old girl was cited and released to her mother.