(CNN) Iran President Hassan Rouhani said his country is working on the development of new, advanced uranium enrichment centrifuges, according to Iranian state-run news agency IRNA, a move that appears to violate the landmark nuclear agreement Tehran signed with world powers in 2015.

Rouhani said at a meeting with Iranian expatriates in the Malaysian capital of Kuala Lumpur on Wednesday that the country is now testing IR-9 centrifuges, which convert mined uranium into fuel for nuclear power. Iran has repeatedly denied it has any ambitions of building a nuclear weapon.

Iran had agreed to strict limits on uranium enrichment as part of the 2015 nuclear deal, known as the Joint Comprehensive Plan of Action (JCPOA).

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Under the terms of the nuclear deal, Iran had committed to not using advanced centrifuges to enrich uranium, among other restrictions on its nuclear program, in exchange for the removal of strict sanctions.

But the pact has been in jeopardy since May 2018, when President Donald Trump withdrew the US from the agreement. The deal is still supported by five other nations -- Britain, China, France, Germany and Russia.

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