Ex-medical student Philong Huynh guilty of murdering, raping 23-year-old Dane Williams

(CBS/KFMB/AP) SAN DIEGO - Philong Huynh, a former San Diego medical student, has been convicted of murdering and raping 23-year-old Dane Williams and dumping his body in an alley.

A jury took three hours to find Huynh, 40, guilty of murder in the January 2008 death of Williams, reports CBS affiliate KFMB.

Williams, an intern for Hurley International, was last seen leaving a bar in San Diego's Gaslamp district. His body was found three days later wrapped in a blood-stained blanket in an alley.

Police said they linked Huynh to the crime through DNA testing.

Huynh was additionally convicted of sodomy and oral copulation of an intoxicated person for a June 2009 sexual assault on a 20-year-old Navy Corpsman who came forward more than a year after Williams' death.

"Well, we've been waiting three and a half years for today," said Williams' father, Jim, reports the station. "You go through this and just kind of living day by day, thinking things will come to an end and you'll get a resolution, and we got that today."

The father thanked San Diego prosecutors for bringing his son's killer to justice.

Deputy District Attorney David Hendren said Huynh was in his third year of medical school, had studied pharmacology, knew a lot about drugs and had prescriptions for Benzodiazapam and Clonazepam. He said the defendant acted like a "wolf in sheep's clothing" by giving Williams diazepam - a central nervous system depressant - rendering the victim unable to fight off a sexual assault.

Williams' body was found three days later in an alley two blocks from the City Heights home that Huynh shared with his mother.

The prosecutor said Williams, the Navy Corpsman and four other men who testified at the trial were heterosexuals who fell victim to Huynh's con game between 2007 and 2009. He said Huynh would meet young, good-looking straight men, gain their trust by talking about women, then offer to buy them drinks and take them to strip clubs in Mexico.

Once he got the victims alone, Huynh would slip them a depressant to knock them out, making them "basically unconscious," he said, reports the station.