Ten students are now believed to be involved in the Aug. 20 death of 19-year-old Anton Gridnev of Frisco.
Six more members of the suspended Sigma Nu chapter at Texas A&M University face drug-related charges, according to College Station police.
Lt. Steve Brock on Friday announced warrants for the additional fraternity members who attended the frat party. Four students originally were arrested on drug-related charges.
All six men being charged lived at the Sigma Nu house. The warrants include possession of marijuana and delivery of a controlled substance.
The names of the six suspects have not been released as the investigation continues.