Student found dead at Texas A&M frat house

COLLEGE STATION, Texas -- Police Sunday were investigating the death of a Texas A&M University student after he was found unresponsive at a fraternity house.

The unidentified 19-year-old was found at the Sigma Nu house in College Station Saturday morning. The student, who was a member of the fraternity, was pronounced dead at a hospital.

RAW VIDEO: Police investigate at Sigma Nu house at Texas A&M

Police believe the student died of an overdose, but were awaiting autopsy reports before releasing their official cause of death.

Meantime, four students were arrested at the frat house for possession of marijuana and another controlled substance.

Mugshots: Texas A&M students arrested on drug charges at Sigma Nu

Michael Frymire, 20; Ty Robertson, 21; Samuel Patterson, 21; and Christian Sandford, 18, were facing charges after their arrest.

The Sigma Nu fraternity said in a statement that they were keeping the victim and his family in their thoughts and prayers. They were also assisting police with the investigation.

The Associated Press contributed to this report.