Iran's official news agency is reporting the country has agreed to more nuclear cooperation with Russia.
Iran's first nuclear power plant was built with Russian help and after years of delays is to begin a preliminary phase of electricity production on Monday.
The IRNA news agency reported Sunday that Iranian Foreign Minister Ali Akbar Salehi said important agreements were signed by both sides in nuclear and other fields.
Salehi spoke after meeting with visiting Russian Energy Minister Sergei Shmatko. Salehi did not elaborate. Currently there are no plans for Russia to help build another plant.
Shmatko will attend Monday's inauguration ceremony at the Bushehr power plant.
Iran says its nuclear program is only for peaceful purposes, but the U.S. fears Tehran is intent on a weapons capability.