The cause of Matthew Perry's death is unknown, as the decision has been "deferred" pending further investigation.

LA Times and TMZ, which first reported the death of the "Friends" actor, stated that he was found unconscious in a hot tub at his home on Saturday.

An autopsy on Perry yielded no results as officials await the results of toxicology tests.

There were no apparent signs of trauma, confirmed a spokesperson for the Los Angeles Police Department to CBS News, BBC's American partner.

On Sunday, the Los Angeles County Department of Medical Examiner-Coroner updated its case, stating that it had been deferred.

Typically, this means that the autopsy is complete but more detailed information is required.

Matthew Perry, a star of "Friends," died at the age of 54. Matthew Perry: The fame of "Friends" couldn't suppress deep demons. Matthew Perry and Chandler: A bond forged in sitcom heaven. The life of Matthew Perry in pictures. A representative from the Los Angeles Fire Department told the BBC on Sunday that emergency responders were dispatched to the Pacific Palisades area due to an "unknown type of water emergency" but did not name Perry.

The star of the 90s hit TV sitcom "Friends" was best known for his role as the witty Chandler Bing.

The show, which depicted the lives of six young friends living in New York, aired from 1994 to 2004.

Its final episode was watched by 52.5 million people in the United States, making it the most-watched TV series of the 2000s.

But at the height of his fame, Perry struggled with addiction to painkillers and alcohol, and he repeatedly sought treatment in rehabilitation centers.

In 2016, he told BBC Radio 2 that he couldn't remember three years of filming "Friends" due to alcohol and drug use.