An Iranian news outlet close to the government reported Friday that two explosions were heard near the Fordo nuclear enrichment site, which is buried deep underground. Nour News, which is close to Iran’s Supreme National Security Council, reported on its Telegram channel that two explosions were heard from the area near the Fordo site. The facility is located hundreds of meters underground. Separately, Iran’s official IRNA news agency reported that a radar site near Tabriz was attacked, according to an official in the East Azerbaijan province. Majid Farshi told IRNA that 11 military sites in East Azerbaijan province have been attacked, and that 18 people were killed, including one Red Crescent aid worker. Israel launched a blistering attack on the heart of Iran’s nuclear and military structure Friday, deploying warplanes and drones smuggled into the country to target key facilities and kill top generals and scientists — a barrage it said was necessary before its adversary got any closer to building an atomic weapon. The ongoing military and intelligence operation raised the potential for all-out war between the countries and propelled the region, already on edge, into even greater upheaval. Iran quickly retaliated by sending a swarm of drones at Israel, and Supreme Leader Ayatollah Ali Khamenei warned of “severe punishment.” Iran had been censured by the U.N.’s atomic watchdog a day earlier for not complying with obligations meant to prevent it from developing a nuclear weapon.

Breaking news : Israel strikes Iran’s nuclear sites and kills its top generals. Iran vows ‘severe’ retaliation.