A 19-year-old Southern Methodist University student who was found unconscious in a dorm this month died of alcohol poisoning, the Dallas County medical examiner's office said Wednesday.

Jordan Crist's blood alcohol level was 0.4, or five times the .08 legal limit, when he died, according to the medical examiner's office.

He's the third SMU student whose death has been linked to either drugs or alcohol since December.

Kent Best, an SMU spokesman, said the university found out about the medical examiner's ruling in Crist's death from the campus newspaper's Web site Wednesday afternoon.

"Like most colleges and universities throughout the nation, SMU must face the issue of alcohol and drug abuse among some of its students," Best said. "We are continually updating and adding programs to educate students about the dangers of substance abuse and offer resources for intervention and assistance."

He said campus police have found no evidence of foul play in Crist's death. He also said he had no information on whether there were other students drinking with Crist or how much of the drinking happened on campus.

Crist was found unconscious in an SMU dorm room May 2. He was pronounced dead two hours later at Presbyterian Hospital of Dallas.

Crist, who was from Hinsdale, Ill., was a pre-business major in Dedman College, SMU's liberal arts college. Crist's family had said that they believed his diabetes insipidus, or water diabetes, probably caused his death.

Jeffrey Barnard, head of the medical examiner's office, said the investigation determined that Crist's diabetes insipidus was not a factor in his death. He said Mr. Crist had a bruise on his head "that could be consistent with a fall, but there was no lethal injury."

Dr. Barnard said that "0.4 is a lethal level for anyone. Our review of his medical history indicated that he had not been having recent complications from his diabetes insipidus."

Crist's family declined to talk about the findings Wednesday evening.

In December, Jacob Stiles was found dead in his room at the Sigma Alpha Epsilon fraternity house on campus. The medical examiner later determined that Stiles, a sophomore from Naperville, Ill., had accidentally overdosed on a mixture of cocaine, alcohol and the synthetic opiate fentanyl.

Earlier this month, the body of 21-year-old Meaghan Bosch was found in a portable toilet in Hewitt, about 100 miles south of Dallas. Authorities investigating her death believe drugs may have been involved.

Staff writer Emily Tsao contributed to this report.