Gregory Tyree Boyce, the actor who played Tyler Crowley in 'Twilight,' the fantasy drama was found dead last week alongside his girlfriend Natalie Adepoju in their Las Vegas condominium.

Boyce, 30, and Adepoju, 27, were pronounced dead Wednesday (May 13), Las Vegas Medical Examiner’s office confirmed to E! News. Their cause of death wasn’t immediately known.

The discovery was made by Boyce’s cousin who then alerted the police.

"Greg's cousin woke up and noticed that Greg's car was still at the house. He was worried because Greg was to be in LA. His cousin went to check on him and found them," the publication quoted an unspecified source.

Deputies at Metropolitan Police Department were called to the home on the 3300 block of Casey Drive to investigate a dead body at around 5:48 p.m. (EST). The department’s spokesman Larry Hadfield told the Las Vegas Review-Journal that the incident “wasn’t criminal.”

On the work front, Boyce was best-known for essaying Crowley’s character that had a crush on Kristen Stewart’s character -- Bella Swan in the first of the “Twilight” movie franchise in 2008. Boyce thereafter appeared in the 2018 short film “Apocalypse.”

Boyce was working to start a wing restaurant prior to his death, his mom, Lisa Wayne, said in a Facebook tribute, calling him “the best chef.”

“I'm sick without you. I'm torn, I'm lost. I'm in pain,” she said. “Why did you leave me.”

See posts, photos and more on Facebook.

Boyce had shifted base to Las Vegas to help his mother, the source told E! News. He is survived by a 10-year-old daughter named Alaya. The source further revealed that Boyce "would commute to LA for acting jobs and to see his daughter."

"Greg was definitely a person who loved life and [was] super positive... super animated, really witty, he was the life of the party. I will definitely miss him. He was one of my funniest friends in LA and made my experience there really memorable," another unidentified source told the publication.

Adepoju leaves behind a young son named Egypt.

Emmett Till gravestone
A plaque marks the gravesite of Emmett Till at Burr Oak Cemetery in Aslip, Illinois, May 4, 2005. Getty Images/Scott Olson