The Texas State President has offered a statement in the wake of a death of one of his students, suspending all Greek activity at Texas State Sorority and Fraternity Chapters.

Investigators in San Marcos were working to determine how a 20-year-old Matthew Ellis died.

Police said Ellis was found dead at an apartment Monday. The Texas State sophomore was unresponsive when friends found him late Monday morning.

He was declared dead just before 12:30 pm yesterday.

According to a preliminary investigation, it's believed Ellis may have died from alcohol poisoning. An autopsy has been ordered to determine the exact cause of death.

Authorities say Ellis was a pledge for the Phi Kappa Psi fraternity at Texas State.

A family friend told KENS 5 that Ellis was at a fraternity event Sunday night and may have drunk too much. KENS 5 has reached out to local and national representatives for the fraternity, but have not received a response.

A statement from the president of the university states that the school has "suspended activities of all Greek fraternity and sorority chapters at Texas State," elaborating that the Greek organizations would be "prohibited from holding new-member events, chapter meetings, social meetings, social functions, and philanthropic activities until a thorough review of the Greek Affairs system is completed."

Ellis was from the Houston area and majoring in business at the time of his death. So far, no arrests have been made.