The UK, France, Germany and the US welcomed Saturday the adoption of an International Atomic Energy Agency (IAEA) Board of Governors resolution on Iran's Safeguards Agreements.

"The resolution responds to Iran’s continued failure to provide the IAEA the information and cooperation needed to clarify long outstanding issues relating to undeclared nuclear material detected at multiple locations in Iran," according to a statement from the quad group. "These issues are central to the Agency’s ability to provide assurance of the exclusively peaceful nature of Iran’s nuclear programme."

Under the Nuclear Non-Proliferation Treaty (NPT) Safeguards Agreement, Iran is legally required to cooperate with the IAEA and provide a complete account of all nuclear materials and activities, it said.

"We expect Iran to reengage on the path of dialogue and cooperation with the Agency," it added.

Iran announced Friday the activation of new and advanced centrifuges in response to the latest resolution passed by the board of the UN nuclear watchdog.

A statement by Iran's Foreign Ministry and the Atomic Energy Organization of Iran said the nuclear body chief has ordered "effective measures" in response to the new IAEA resolution.

The measures include deploying a "significant range of new and advanced centrifuges of various types."