US Supreme Court Justice Antonin Scalia has died aged 79.
According to a CNN report he died in his sleep at home, having told friends he did not feel well.
Appointed by President Ronald Regan in 1986, Justice Scalia was one of the most conservative members of the US top court.
"On behalf of the court and retired justices, I am saddened to report that our colleague Justice Antonin Scalia has passed away," Chief Justice John Roberts said in a statement.
The judge's death looks set to create a political dispute over who should replace between President Barack Obama and the Republican-controlled Senate over who should replace him.