Iran has confirmed it is having to remove nuclear fuel from the reactor at the Bushehr power plant, the latest in a series of delays to hit the project.
On Friday, the International Atomic Energy Agency (IAEA) said it had new information on "possible military dimensions" to Iran's nuclear plans, which Iran says are purely peaceful.
The IAEA will supervise the unloading of fuel from Bushehr, Iran's nuclear envoy Ali Asghar Soltanieh said.
Iran began the Bushehr project in 1976.
Iran's Fars news agency says the fuel is being removed for "technical reasons".
The fuel at Bushehr is being provided by Russia, which built the plant and whose engineers will carry out the unloading, under the supervision of the IAEA.
"Upon a demand from Russia, which is responsible for completing the Bushehr nuclear power plant, fuel assemblies from the core of the reactor will be unloaded for a period of time to carry out tests and take technical measurements," Mr Soltanieh said, according to the semi-official Isna news agency. BBC News
