Israeli Prime Minister Benjamin Netanyahu said Monday that Iran has been developing nuclear weapons at a secret facility near the Iranian city of Abadeh.

In statements to the press, the Israeli leader said the information was obtained thanks to documents seized during a raid on a warehouse in Tehran last year, according to The Times of Israel

“Today, we’re revealing that yet another secret nuclear site was exposed in the archives that we brought from Tehran. In this site, Iran conducted experiments to develop nuclear weapons,” Netanyahu said.

According to Netanyahu, the Iranians would have destroyed the facilities knowing that they had been discovered with the intention of erasing the evidence.

The prime minister showed the press before and after photos of the site.

 “When Iran realized that we uncovered the site, here’s what they did,” he said, showing a photo from a month later in which the buildings no longer appeared. “They destroyed the site. They just wiped it out,” he added.

Last year Israel denounced the existence of a secret atomic warehouse in Turquzubad, Tehran province, and asked the International Atomic Energy Agency (IAEA) to investigate the site immediately.

On Sunday, the U.N. nuclear watchdog confirmed that it found traces of uranium at the site that Iran has yet to explain, according to Reuters. 

On this occasion the Israeli prime minister, contrary to the nuclear agreement signed by the Obama administration and other European powers with Iran in 2015, asked the international community “to wake up to realize that Iran is systematically [violating the deal]” and then addressed Iran directly.

“This is what I have to say to the tyrants of Iran: Israel knows what you’re doing, Israel knows when you’re doing it, and Israel knows where you’re doing it,” Netanyahu said, speaking first in Hebrew and then repeating his statement in English according to The Times of Israel.

“We will continue to expose your lies,” he added.

“The only way to stop Iran’s march to the bomb, and its aggression in the region, is pressure, pressure, and more pressure,” Netanyahu added, according to Reuters.

Iranian Foreign Minister Javad Zarif responded by accusing Netanyahu of seeking war with his country and tweeted: “The possessor of REAL nukes cries wolf—on an ALLEGED ‘demolished’ site in Iran.”

In this regard, U.S. Secretary of State Mike Pompeo said on Twitter that “the Iranian regime’s lack of full cooperation with the International Atomic Energy Agency raises questions about possible undeclared nuclear material or activities.”