Iran says it has executed Abdolmalek Rigi, head of the Sunni rebel group Jundallah, who waged an insurgency in Iran's southeastern province of Sistan-Baluchestan.
The state news agency IRNA reported that he was hanged after the decision of the Tehran revolutionary tribunal.
It quoted a court statement as saying Abdolmalek Rigi was responsible for armed robbery, assassination attempts, armed attacks on the army and police and on ordinary people, and murder.
He was captured in February while on a flight.
Iran says his Sunni militant group called Jundallah, or Soldiers of God, was backed by the United States.