Iran live updates: IRGC says Strait of Hormuz will 'never' revert to pre-war state

World Health Organization Director-General Tedros Ghebreyesus said in a post to X on Sunday that strikes on Iranian nuclear facilities "could trigger a nuclear accident, with health impacts that would devastate generations."

"With every passing day of this escalating conflict, the stakes and threats are raised higher and higher. We must de-escalate now," Ghebreyesus said, following the latest report of attacks near Iran's Bushehr Nuclear Power Plant.

Iranian Foreign Minister Abbas Araghchi on Saturday accused the U.S. and Israel of striking close to the plant four times since Feb. 28. Iran's Atomic Energy Organization said one employee was killed in the latest strike near the facility on Saturday.

-ABC News' Rashid Haddou

Iran's semi-official, Islamic Revolutionary Guard Corps-affiliated Tasnim News Agency on Sunday claimed that Iranian forces destroyed "several" U.S. aircraft which were involved in the operation to rescue the second F-15 crew member downed over Iran on Friday.

Other state-run and semi-official news agencies, among them the state-run Islamic Republic of Iran Broadcasting television station, also published the claim, which was attributed to a spokesperson for the Iranian military's Khatam Al-Anbiya Central Headquarters.

The spokesperson claimed that Iranian forces destroyed two C-130 aircraft, as well as two Black Hawk helicopters, Tasnim reported.

The Iranian military has previously made unconfirmed claims alleging damage to U.S. military assets. U.S. officials told ABC News that American forces destroyed two stuck C-130s during the rescue operation to avoid them falling into Iranian hands.

U.S. officials have also said that two Black Hawk helicopters were hit by incoming fire during the operation to retrieve the first of the downed F-15 airmen on Friday.

-ABC News' Rashid Haddou

Bapco Energies said on Sunday that an Iranian drone attack caused a fire at one of its storage facilities in Bahrain, according to a statement sent to ABC News' by Bahrain's National Communication Centre.

"The fire has been fully extinguished, and the situation is under control. Damages are currently being assessed and evaluated. No injuries have been reported," the statement said.

The Bahraini Gulf Petrochemical Industries Company also said that a number of its operational units were attacked by Iranian drones in the early hours of Sunday morning, causing "fires across the affected units," according to a report by the state-run Bahrain News Agency.

"All fires have since been fully extinguished and the situation is now under control," the statement said. The GPIC reported no casualties related to the incident.

Two C-130 aircraft that were part of the mission to rescue the second F-15 crew member became stuck at a location inside Iran during the operation, a U.S. official told ABC News.

U.S. forces deliberately destroyed the disabled aircraft so they would not fall into Iranian hands. As a result, additional replacement aircraft had to be flown into Iran to take the airman and the rescue teams out of the country, the official said.

-ABC News' Luis Martinez