Iran said on Sunday it had shot down an Israeli spy drone that was heading for its Natanz nuclear enrichment site, Iranian media reported. The reports further claimed that the  Iran Revolutionary Guards Corps (IRGC) was working to extract intelligence and data from the drone's remains.

IRGC's Public Relations Department General Ramezan Sharif was quoted by Iran's semi-official Fars News Agency as saying that some of the parts of the downed aircraft are working, "and our experts are studying the information and intelligence of these parts. We are now analyzing the information of this plane."

"The downed aircraft was of the stealth, radar-evasive type and it intended to penetrate the off-limits nuclear area in Natanz ... but was targeted by a ground-to-air missile before it managed to enter the area," state news agency ISNA said, citing a statement by Iran's Revolutionary Guards.

The Natanz facility is one issue at the heart of a long-running dispute between Iran and countries that believe it is seeking nuclear weapons capability, something Tehran denies.

Iran and six world powers are trying to negotiate an end to the standoff which has led to damaging economic sanctions imposed on the Islamic Republic.

Israel, assumed to have the Middle East's only atomic arsenal, demands Iran be stripped of all nuclear technologies, something Tehran rules out and which most foreign diplomats deem unrealistic.

Israel and the West suspect Iran of planning to build a nuclear bomb. In the past, Iran has often accused its Western and Israeli foes of trying to sabotage its nuclear program, which Tehran says is peaceful.

Iran has accused Israel and its allies in the West of assassinating its nuclear scientists and attacking its nuclear sites with computer viruses.

Israel has always declined comment on such accusations and on Sunday its military said it did not comment on foreign reports.

The Revolutionary Guards said of the drone incursion: "This wily act further exposed the Zionist regime's adventurous temperament and added yet another black page to a record filled with crime and mischief."

If confirmed, an aircraft built by Israel's state-owned Aerospace Industries known as the Heron, or the more powerful Heron TP, is likely to have been involved for such a long-range mission. Military commanders in Israel have described both as a possible means of monitoring Iran and other countries.

In December 2012, Iran said it had captured a US intelligence ScanEagle drone, but the United States said at the time there was no evidence to support the assertion.

In December 2011, Iran said it had captured a US RQ-170 reconnaissance drone which was reported lost by US forces in neighboring Afghanistan.

Iranian commanders have since announced they had extracted technology from the aircraft and were reverse-engineering it for their own defense industry.

In 2010, Iran's nuclear facilities were hit by a virus known as Stuxnet, which was widely believed to have been developed by the United States and Israel, though no government took responsibility for it.

In March of this year, pumps at Iran's planned Arak reactor, seen by the West as a potential source of plutonium that could be used in nuclear bombs, were subjected to a failed sabotage attempt, a senior Iranian official said.

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