Iran's state TV says Majid Jamali Fashi, who assassinated top Iranian nuclear physicist Massoud Ali-Mohammadi in January 2011, was executed in Tehran’s Evin prison.
On Monday, Iran upheld on a death sentence against Majid Jamali Fashi convicted for assassinating nuclear physicist Massoud Ali-Mohammadi in January 2010, Iranian state-owned Press TV reported.
Fashi was also convicted of visiting Israel, where he allegedly received instruction and training from the Mossad as well as $120,000 to kill Mohammadi.
Massoud Ali-Mohammadi, was killed when an explosive-laden motorbike was detonated with a remote-controlled device near his home in northern Tehran in January 2010.
Meanwhile, an Iranian court on Sunday sentenced 13 people after finding them guilty of involvement in espionage activities for the Mossad, the Israeli intelligence agency.
Branch 15 of Tehran's Revolution Court ruled that they had been lured into spying for the Mossad by overseas-based satellite television networks and sophisticated advertisement campaigns.
The defendants reportedly accepted large sums of money from Mossad and CIA agents.
According to Press TV, the Iranian Intelligence Ministry announced on April 17 that it had arrested over a dozen Israeli-linked spies and terrorists. The ministry said the detainees were of Iranian and non-Iranian nationalities.
At the time, the ministry said that one of the missions of these "terrorists" was to identify and assassinate one of the country's experts.
Iran’s Intelligence Ministry has recently announced uncovering an Israeli spy base in Iraq's Kurdish region, which was run by Mossad.
"Israeli spies were using Kurdistan as a base to gather information and operate against Iran," Mohammed Ali Jaffari, commander of Iran's Revolutionary Guards said.
"Israelis are working under different passports and names and banners," he added.
On April 21, Iranian MP Esmaeel Kosari told Al-Alam news channel that Kurdistan and Azerbaijan "should know that the presence of the Zionist regime on their soil will be harmful to them."
Tehran has repeatedly blamed Israel and the US for the attacks on the country’s nuclear scientists.Tehran says it is pursuing nuclear energy options and not building a bomb.