Israeli missiles have hit a site in Iran, according to reports saying an explosion occurred in the center of the country.
Iran's Fars news agency said an explosion was heard at an airport in the central city of Isfahan but the cause was not immediately known. Iran suspended flights over the cities of Isfahan, Shiraz and Tehran, state media reported.
Several Iranian nuclear sites are located in Isfahan province, including Natanz, centerpiece of Iran's uranium enrichment program.
Israel had warned it would hit back after Iran fired hundreds of missiles and drones at Israel over the weekend. Most of them were intercepted.
That strike came in the wake of an attack on Iran's consulate in Damascus widely blamed on Israel.