A bridge struck by U.S. airstrikes on Thursday is seen in the town of Karaj, west of Tehran, Iran, Friday. Vahid Salemi/AP hide caption
toggle caption Vahid Salemi/APIran state media have reported an American F-15 jet has gone down in Iran.
A U.S. official who was not authorized to speak publicly has confirmed the reports and added that a search is underway by U.S. forces.
This is a breaking news story and will be updated.