Police are searching for six suspects after shots were fired inside a residence hall at California State University, Sacramento, on Sunday night, in the second shooting on the campus in about a month.

Gunshots were reported at around 11 p.m. on Sunday inside the first-floor lobby and computer room of Klamath Hall, a residence hall for first-year students in the school's North Village area. University police arrived within a minute and found that rounds had been fired. No injuries were reported.

The Sacramento State Police Department described the six suspects as men between 18 and 20 years old. Three of them were about 6 feet tall, two about 5 feet 10 inches and one between 5 feet 6 inches and 5 feet 8 inches tall. The group fled toward J Street, and police do not believe the suspects are Sacramento State students. Three of them were reportedly carrying handguns.

Klamath Hall houses about 200 first-year students, and North Village holds roughly 2,500 residents. The university has tightened access to campus buildings and stepped up patrols while the search continues. "I'm definitely questioning the safety a little bit because if they were not people who lived in Klamath, I want to know how they got inside," freshman Dan Quae told KCRA 3.

Sunday's shooting comes about a month after four people were wounded by gunfire at a football game at the school. Police are asking anyone with information to contact the Sacramento State Police Department. The investigation remains underway.