Gregory Tyree Boyce of 'Twilight' and Girlfriend Adepoju's Cause of Death Revealed

"Twilight" star Gregory Tyree Boyce and his girlfriend Adepoju's cause of death has been revealed to be drug-related. The duo was found dead in their Las Vegas apartment on May 13.

Three weeks after "Twilight" star Gregory Tyree Boyce and his girlfriend Adepoju were found dead, the cause of their demise has been revealed.

Gregory Tyree Boyce attends LA Fashion Week Fashion at Exchange LA on October 18, 2012 in Los Angeles, California | Photo: Getty Images

According to a Clark County coroner spokesperson who spoke People Magazine, the pair passed away from the effects of cocaine and fentanyl intoxication with their death ruled as an accident.

Circumstances surrounding Boyce's death had pointed fans to a previous Instagram post where he revealed that he didn't think he "would make it to see 30 years old."

The Hollywood Reporter recalls that Gregory, 30, and Adepoju, 27, were found lifeless on May 13 after Las Vegas police were called to their condo located east of the Las Vegas strip. It was reported that the officers found a white powdery substance on the dresser and suggested no foul play evidence.

According to E! Online, who first reported Boyce's death, a source revealed that Greg's cousin suspected something was wrong when he noticed that the actor's car was still at the house even if he was supposed to be in Los Angeles.

That was when he went to their apartment to check and found the couple dead. His mother, Lisa Wayne, took to Facebook to pay tribute to her son, calling him her "Hunny" and detailed his plans to start a wing business called West Wings. Praising his skill, she wrote:

"I can say that my son was my favorite chef. He was on to something great, and that was his passion."

She also talked about his girlfriend and how they were working together on a business plan. This comes after People Magazine reported circumstances surrounding Boyce's death had pointed fans to a previous Instagram post where he revealed that he didn't think he "would make it to see 30 years old."

The post which was shared to mark his 30th birthday saw him reflect on his poor choices and how grateful he was to hit the milestone.

Boyce, who was famous for his role as Tyler Crowley on "Twilight" is survived by his 10-year-old daughter while his girlfriend left behind her son Egypt. May their souls rest in peace.