More tests needed for cause of Monteith's death

The cause of "Glee" actor Cory Monteith's death remained unclear Monday, and authorities in Canada said it could take several

days before toxicology test results are in.

Vancouver police Sgt. Randy Fincham said there's nothing to indicate the death was due to illicit drug use.

Monteith, 31, was found dead in his Vancouver, British Columbia, hotel room on Saturday, according to police, who have ruled

out foul play.

Police said Monteith had been out with people earlier, but video and electronic records from the hotel indicated he returned

to his room by himself early Saturday. He was believed to be alone when he died.

Monteith's passing recalls the lives of

Heath Ledger, Corey Haim and River Phoenix — actors who battled

substance abuse and

died in their 20s and 30s. Monteith talked bluntly about

struggling with addiction since he was a teenager, calling it a serious

problem and telling Parade magazine in 2011 he was "lucky to be

alive."

Monteith admitted himself to a treatment

facility in April for substance addiction and asked for privacy as he

took steps

toward recovery, a representative said at the time. Lea Michele,

Monteith's "Glee" co-star and real-life girlfriend, told

People magazine that she loved and supported him and was proud he

was seeking help. It was not Monteith's first time in rehab.

He also received treatment when he was 19.

The Fox network and the producers of "Glee," including 20th Century Fox Television, called Monteith an exceptional performer

"and an even more exceptional person." Michele asked for privacy upon hearing the news of his death.

A makeshift memorial emerged outside the Vancouver hotel. #RipCoryMonteith and #StayStrongLea became trending topics on Twitter.

In England, what was supposed to be a weekend celebration of "Glee" turned into an impromptu memorial after news of Monteith's

death rocked a fan convention.

"The news was devastating. No one had any

idea what to say or do," said Chloe Harvey, an 18-year-old fan from

Portsmouth,

England. "It just shows how much of a truly amazing guy Cory was

that everyone was so shocked and emotional about the news."

"Glee," with its catchy song-and-dance numbers and high-profile guest stars like Gwyneth Paltrow and Britney Spears, became

an instant hit when it debuted in 2009 and made celebrities of Montieth and the rest of the relatively unknown cast.

Monteith served as the show's resident hunk

with a heart of gold. He played Finn Hudson, a football quarterback with

two left

feet who found more camaraderie in the choir room than on the

football field. After his character graduated high school, Hudson

sought out to find himself before settling on what he wanted to do

with his life: become a teacher and mentor.