Baylor University basketball player Patrick Dennehy (search) was shot twice in the side of the head and did not have alcohol in his system when he died, according to an autopsy report released Wednesday.

The report from the Southwestern Institute of Forensic Sciences (search) in Dallas said Dennehy's drug screen was negative, though tissue samples were unsuitable to test for marijuana.

Dennehy had been missing for about six weeks when his body was found July 25 in a field south of the Baylor campus. The report does not say how long he had been dead.

A preliminary autopsy report released last month said the 6-foot-10 Dennehy died of gunshot wounds to the head, but it did not provide further details.

Jessica De La Rosa, Dennehy's girlfriend of two years, told The Associated Press that she was not surprised the toxicology tests (search) were negative.

"I had no doubt in my mind that (drug use) was no part of this," she said from her home in Albuquerque, N.M.

Allegations had surfaced after the 21-year-old Dennehy disappeared in June that there was rampant drug use on the Baylor basketball team.

Carlton Dotson (search), Dennehy's former teammate and roommate, has been charged with murder in Dennehy's death and remains jailed in his home state of Maryland, awaiting transfer to Texas.

Dotson, 21, told FBI agents that he shot Dennehy after the player tried to shoot him, according to an arrest warrant affidavit.

After Dennehy's disappearance, some of his family and friends said a coach gave him money for a car and apartment and that his tuition was taken care of although he was not on a scholarship, in violation of NCAA rules.

Basketball coach Dave Bliss and athletic director Tom Stanton abruptly resigned Friday.

Baylor president Robert Sloan said school investigators discovered that Bliss was involved in two players' receiving improper financial aid and that staff members did not properly report failed drug tests by players. Sloan said Stanton had no direct knowledge of any violations.