Washington: The US military has recovered unidentified human remains from the site of an Iranian attack in Jordan, where one American service member had been reported missing, while another US service member was killed separately in Iraq, the US Central Command (CENTCOM) said on Sunday.

In a statement posted on X, CENTCOM said the remains were found following an extensive search at the site of the July 17 attack in Jordan.

"Yesterday, U.S. Central Command (CENTCOM) announced the passing of two U.S. service members and the missing status of one in Jordan following an Iranian attack on July 17. After a thorough search, U.S. military personnel found unidentified remains at the location earlier today. An examination process to verify the remains is ongoing."

Separately, CENTCOM said a US service member was killed during an operation in northern Iraq involving the disposal of unexploded ordnance from a downed Iranian drone.

"Separately, a U.S. service member in northern Iraq was killed in action July 18 during a controlled detonation of unexploded ordnance from a downed Iranian one-way attack drone. A second service member was wounded and continues to receive medical treatment for a minor injury."

The military said it was withholding the identities of the missing and fallen personnel until their families had been notified.

CENTCOM also said US forces continued enforcing the naval blockade against Iran, adding that as of July 19 they had redirected six commercial vessels and disabled one vessel to ensure "full compliance."

The developments come as fighting between the United States and Iran intensified across West Asia, with both sides carrying out fresh military operations over the weekend.

The International Atomic Energy Agency (IAEA) said it was examining reports of an overnight strike on the under-construction Darkhovin nuclear power plant in Iran's southwestern Khuzestan province.

"The IAEA is looking into reports of an overnight attack on the construction site of a planned nuclear power plant in Darkhovin, Iran. The facility is in the very early stages of construction and contained no nuclear material when last visited by the IAEA," the agency said in a post on X.

The UN nuclear watchdog added that the reported attack was not expected to create a radiation hazard.

"While the reported attack is not believed to pose any radiological risk, DG Rafael Mariano Grossi reiterates call for military restraint in the vicinity of all nuclear-related sites," the IAEA said, adding that it had contacted Iranian authorities and would provide further updates as more information became available.

Iran later claimed the United States had struck the Darkhovin nuclear power plant, with state broadcaster IRIB reporting that the attack took place at around 3:39 am local time.

Iran also claimed that the Islamic Revolutionary Guard Corps (IRGC) shot down a US MQ-9 drone over Ahvaz, while the semi-official Tasnim News Agency reported fresh US airstrikes on Qeshm Island, where at least two explosions were heard. Iranian authorities said emergency, security and operational teams had been deployed to assess the damage and any casualties.

Meanwhile, the United States announced another wave of military strikes against Iran. CENTCOM said it had carried out "another round of strikes against Iran" under the direction of President Donald Trump.

According to CENTCOM, the strikes targeted Iranian coastal surveillance networks, air defence systems, maritime assets, and missile and drone storage facilities to further degrade "Iranian military capabilities."

The command also said US forces struck IRGC personnel responsible for attacks on American troops in Jordan, describing the operation as one intended to "swiftly punish Islamic Revolutionary Guard Corps forces who launched attacks against American service members in Jordan last night."

CENTCOM added that the strikes were designed to "further degrade Iran's ability to threaten commercial shipping in the Strait of Hormuz" and stressed that US forces remain "highly vigilant, focused, lethal, and ready."