The 19-year-old student was found unresponsive at the Sigma Nu house in College Station on Saturday.
Police believe the student died of an overdose, but are awaiting autopsy reports before releasing their official cause of death.
Meanwhile, four students were arrested at the frat house for possession of marijuana and another controlled substance.
Michael Frymire, 20; Ty Robertson, 21; Samuel Patterson, 21; and Christian Sandford, 18, are now facing charges after their arrest.
The Sigma Nu fraternity said in a statement they are keeping the victim and his family in their thoughts and prayers. They are also assisting police with the investigation.