An Iranian opposition political party says its leader, who has been under house arrest for four years without charge, has undergone foot surgery for a broken bone.
Mehdi Karrubi, former chairman of Iran's parliament, was put under house arrest in 2011 after he challenged the results of the 2009 presidential election that returned hard-liner Mahmud Ahmadinejad to office.
Karrubi's National Confidence Party on December 8 quoted his son, Hossein, as saying the "surgery was successful."
The party website says Hossein Fereidoun, the brother of President Hassan Rohani, visited Karrubi in the hospital and wished him a speedy recovery.
It was the sixth time Karrubi has undergone surgery while under house arrest.
He previously has had heart, eye, and back surgery.
With reporting by AP