The United Kingdom Maritime Trade Operations (UKMTO) reported another incident off Oman on Friday involving a merchant tanker and military forces about 100 nautical miles east of Duqm, marking the third incident in the region that day.
No further details were immediately available.
The report came after an unknown projectile hit a tanker off the coast of Oman earlier Friday, causing minor structural damage, according to UKMTO.
UKMTO said it received a report of that incident 19 nautical miles east of Khasab, Oman.
The agency said the projectile struck the port side of the vessel, causing minor damage.
All crew members were safe and accounted for, and the vessel was continuing to its next port of call while authorities investigated the incident, UKMTO said.
Earlier Friday, Iran's Islamic Revolutionary Guard Corps (IRGC) said its navy targeted radar sites in Oman, including a U.S. air-control radar, according to the ISNA news agency.
ISNA, citing an IRGC statement, reported that a naval control radar on the Salameh Rocks and a U.S. air-control radar in Oman's Ghanem region were targeted at dawn.
The IRGC claimed both radar systems were destroyed.
There was no immediate comment from Omani authorities on the claim.
Iran said Friday that it targeted U.S. military sites in five Arab countries in retaliation for recent U.S. strikes on its territory.
Kuwait, Qatar, Bahrain and Jordan said they intercepted Iranian missiles and drones targeting their territories.
The IRGC said its Aerospace Force targeted a U.S. military base in Kuwait as part of the 12th wave of what it described as a retaliatory operation, according to the semi-official Mehr News Agency.
The IRGC said the targets included a missile defense detection and tracking radar, several weapons depots, two High Mobility Artillery Rocket System (HIMARS) launchers and missiles stored for the system.
It claimed the strike triggered a large fire at the base.
Kuwait's army said early Friday that its air defense systems intercepted Iranian missiles and drones targeting the country.
Jordan said it intercepted and shot down three Iranian missiles that entered its airspace, with no casualties reported, according to the state-run Petra news agency.
The IRGC, meanwhile, said it carried out a two-phase attack on U.S. fighter jets and aerial refueling aircraft stationed in Jordan using several ballistic missiles and a large number of drones, according to the official IRNA news agency.
Qatar's armed forces said they intercepted several aerial attacks targeting the country, according to the Defense Ministry.
Qatar's Interior Ministry said one child was injured by falling shrapnel from interception operations.
Iran's army also said it launched a drone strike targeting facilities used by U.S. military aircraft at Al-Sakhir Air Base in Bahrain, claiming it hit areas where U.S. military helicopters and P-8 maritime patrol and reconnaissance aircraft were stationed.
Bahrain's Defense Force said its air defense systems intercepted and destroyed "a number of treacherous Iranian aerial attacks" Friday.
In Syria, the IRGC said its Aerospace Force struck a U.S. special operations command center in the Al-Tanf region, according to Fars News Agency.
The IRGC claimed the strike destroyed a radar system and several special operations helicopters.
It also claimed that several U.S. troops were captured during the operation.
There was no immediate comment from Syrian authorities or U.S. officials on the alleged attack.
U.S. Central Command (CENTCOM) said Thursday that it completed a new wave of offensive strikes against Iran, marking the sixth consecutive night of U.S. military operations targeting Iranian military assets, mainly in southern Iran.
Regional tensions have escalated since February, when the United States and Israel launched a joint offensive against Iran, while Tehran responded with missile and drone strikes targeting Gulf countries hosting U.S. military assets.
The United States and Iran signed a memorandum of understanding brokered by Pakistan last month aimed at ending the conflict and reaching a lasting peace agreement.
Tensions have escalated in recent days over the Strait of Hormuz, with the two sides exchanging attacks despite the memorandum.