Sri Lanka, April 13 -- Iran on Monday accused arch-foe Israel of sabotaging its key Natanz nuclear site and vowed revenge for an attack that appeared to be latest episode in a long-running covert war.

Iran's semi-official Nournews website said the person who caused an electricity outage in one of the production halls at the underground uranium enrichment plant had been identified. "Necessary measures are being taken to arrest this person," the website reported, without giving details about the person.

The incident occurred amid diplomatic efforts by Iran and the United States to revive Tehran's 2015 nuclear deal with major powers, an accord Israel fiercely opposed, after former U.S. President Donald Trump abandoned it three years ago. ...