US rapper and actor DMX is in serious condition in hospital following a heart attack, says his lawyer Murray Richman.

Axar.az reports that Mr Richman told US media he didn't know whether the heart attack was brought on by a drug overdose, as reported by TMZ.

DMX has publicly battled substance abuse for years, and spent several periods in rehab.

He is seen as a hip-hop icon, and has collaborated with artists including JAY-Z, Ja Rule, Eve and LL Cool J as well as appearing in films.

The 50-year-old, whose real name is Earl Simmons, was taken to hospital in White Plains, New York late on Friday evening, Mr Richman said, where he is surrounded by his family.

"He was on life support," the lawyer said. "He's been taken off of life support. He is breathing on his own but there is a little brain activity."

The father-of-15 has served jail sentences in the past on charges including animal cruelty, reckless driving, drug possession and weapons possession.