Iran's official news agency says Mahmoud Ahmadinejad's helicopter experienced an unspecified "incident" while touring a rural area, but the Iranian president's pilot landed the aircraft safely and the leader was unhurt.

The report by IRNA did not elaborate on the Sunday incident, which happened as Ahmadinejad was en route to a mountainous area in the north of the country to inaugurate a highway tunnel.

It said the pilot landed skillfully and neither the president nor his companions were hurt. The report said Ahmadinejad made it to the inauguration ceremony on time.