Drug use led to the deaths of Twilight star Gregory Tyree Boyce and his girlfriend, a coroner has ruled.

The actor, 30, and his partner Natalie Adepoju, 27, were found dead at their Las Vegas apartment on 13 May.

Clark County Coroner John Fudenberg said on Monday the couple died from the effects of cocaine and fentanyl intoxication, and their deaths were accidental.

Boyce was best known for playing Tyler Crowley in the first Twilight film in 2008.

A love interest of Bella Swan (played by Kristen Stewart), he nearly runs her over in a car park before being stopped at the last minute by Robert Pattinson’s character, Edward.

Boyce also acted in a short film called Apocalypse in 2018.

In a poignant Instagram post marking his 30th birthday in December, Boyce shared a picture of himself as a child and wrote: “At one point I didn’t think I would make it to see 30 years old.

“Over the years like everyone else I have made mistakes along the way, but today is one of those days I only reflect on the great ones. What a time to be alive.”

His final post on the social media site was a picture of himself and his girlfriend sharing a kiss on the beach. They had been dating for around a year.

He wrote: “Happy Mother’s Day again to my right hand/ my roll dog/ my Queen! Love you.”

It was posted on 10 May, the day celebrated as Mother’s Day in America, just days before the couple’s bodies were discovered.