TEHRAN, June 7 (Xinhua) -- Iran claims its intelligence agencies have obtained a significant cache of documents related to Israel's nuclear program, Iranian state broadcaster IRIB said on Saturday, a report that Israeli officials have not commented on.

The documents, which Iranian media described as "sensitive and strategic," were reportedly smuggled out of Israel. The IRIB, citing unidentified regional sources, called the alleged acquisition one of the most significant intelligence breaches in Israel's history.

The material is said to include thousands of files detailing Israel's nuclear facilities and plans. The transfer of the documents required a period of media silence to ensure their safe arrival in Iran, the IRIB said. The state broadcaster noted that the volume of data was so large that it took several weeks to review and catalog.

The Iranian report follows a May 20 announcement by Israel's Shin Bet security agency and police. In a joint statement, they said two Israeli citizens had been arrested in April near Haifa on suspicion of intelligence gathering for Iran.

The IRIB suggested the arrests might be linked to the document exfiltration, but claimed they occurred after the files were already out of the country.

There was no immediate comment from Israeli authorities on the IRIB report.

In recent years, Israel has accused Iran of intensifying efforts to recruit Israelis for espionage through monetary exchange. In December, Israeli police arrested nearly 30 citizens, most of them Jewish, on suspicion of spying for Iran. ■