US actor Matthew Perry, best known for playing wisecracking Chandler Bing in the hit '90s TV sitcom Friends, has died at the age of 54.
The actor was found dead at his home in Los Angeles, law enforcement sources told US media.
Friends, which followed the fortunes of six young friends living in New York City, aired from 1994 until 2004.
Its final episode was watched by 52.5 million in the US, making it the most watched TV episode of the 2000s.
The LA Times and TMZ, which first reported that Perry had died, said the actor was found unresponsive in a hot tub at his house.
A Los Angeles Fire Department spokesperson told the BBC that first responders went to an address in the Pacific Palisades area, regarding a "water emergency" of an unknown type, but did not name Perry.
Warner Bros, which produced the long-running show whose global reruns were loved by new generations of viewers, described Perry as a "true gift to us all".