"Amir Ali Mirjafari... one of the armed elements collaborating with the enemy who had attempted to set fire to the Gholhak Grand Mosque and was the leader of the Mossad network's anti-security activities in that area, was hanged this morning," the judiciary's Mizan Online website reported.

It added that his death sentence, confirmed by the Supreme Court, was based on acting on behalf of "the Zionist regime, the hostile US government, and hostile groups against the security of the country by setting fire to the Gholhak Grand Mosque and public facilities."

Mizan said the incident took place during protests that broke out in Iran in late December over rising living costs before evolving into nationwide anti-government demonstrations that peaked on Jan 8 and 9.

Iran has in recent weeks carried out multiple executions of people linked to the protests, whom authorities accused of acting on behalf of Israel, the United States or opposition groups, including members of the banned People's Mujahedin (MEK).

Iran has been at war with the United States and Israel since Feb 28. A fragile two-week ceasefire has been in place since April 8.