Russia and Saudi Arabia have agreed on nuclear energy and space cooperation, Russian Foreign Minister Sergey Lavrov said after negotiations between Russian President Vladimir Putin and Saudi Arabian King Salman bin Abdulaziz Al Saud.

"I would like to mention the energy industry, not just traditional one, but the nuclear energy industry as well and cooperation in space exploration, agricultural sector and infrastructural projects among advanced industries in which agreements were signed today," the Russian top diplomat was quoted as saying by Tass news agency.

Meanwhile, Saudi Arabia has shown interest in purchasing Russia's S-400 missile systems, Russian Deputy Prime Minister Dmitry Rogozin said.

"There is some interest, of course," he said. "Talks on S-400 are in progress, but there are no final decisions yet," he said according to Tass news agency.

Rogozin added that military-technical cooperation was discussed during the talks behind closed doors.