The family of the American actor Tom Sizemore have said they are "now deciding end-of-life matters" after he suffered a brain aneurysm.
The 61-year-old has been in a coma in intensive care since collapsing on 18 February at his home in Los Angeles.
A statement from his manager Charles Lago to the AP news agency said: "Today, doctors informed his family that there is no further hope and have recommended an end-of-life decision."
He added that the aneurysm had been the result of a stroke and that a further statement would be issued on Wednesday.
Sizemore's first major appearance was in the 1989 Oliver Stone film Born on the Fourth of July.
That performance opened doors in Hollywood and he carved out a niche playing the quintessential hardman, from gangsters to bodyguards and soldiers.
He secured supporting roles in films such as Point Break, True Romance and Natural Born Killers.
His portrayal of professional thief Michael Cheritto in the 1995 heist film Heat, written and directed by Michael Mann and starring Al Pacino and Robert De Niro, won him plaudits.
He also received acclaim for his performance opposite Tom Hanks in Steven Spielberg's 1998 WWII epic Saving Private Ryan.
Sizemore made a memorable contribution to the popular video game Grand Theft Auto: Vice City, voicing mob boss Sonny Forelli.
The Detroit-born actor had a history of drug addiction. He wrote in his autobiography about his heavy use of heroin and crystal meth. He was once checked into rehab by De Niro.
He was married to the actress Maeve Quinlan, known for her role in the US soap opera The Bold and the Beautiful, between 1996 and 1999.
In 2003, he was convicted of domestic violence charges against his former girlfriend Heidi Fleiss. Sizemore was ordered to complete a drug rehabilitation programme before beginning a jail term.
In 2018, an actress filed a lawsuit against Sizemore, claiming he allegedly groped her when she was an 11-year-old during production on the 2005 film Born Killers.
Sizemore strongly denied the allegation and the suit was dismissed.
Source: Press Association
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