New York (CNN) Israeli Prime Minister Benjamin Netanyahu claimed Thursday that Iran has a "secret" nuclear facility and warehouse in Tehran, but offered no proof of the claim or details.

Netanyahu, speaking to the United Nations General Assembly said that he had shared this information with the International Atomic Energy Agency and intelligence agencies.

"What I'm about to say has not been shared before. Today, I am disclosing for the first time that Iran has another secret facility in Tehran," Netanyahu said. "A secret atomic warehouse for storing massive amounts of equipment and ammunition and material from Iran's secret nuclear weapons program."

The Israeli leader showed the General Assembly what looks like satellite imagery of the alleged warehouse and archive sites, and then presented the UN with another visual which showed Google Map coordinates for what he said is the secret warehouse.

Netanyahu's announcement comes a few months after Israel announced that it had stolen a trove of nuclear-related files and documents from a dilapidated Iranian warehouse. Making the announcement May 1, Netanyahu claimed that it showed Tehran had been lying about its nuclear ambitions when it engaged in negotiations over the 2015 Iran nuclear deal formally known as the Joint Comprehensive Plan of Action.

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