A damaged Japanese tanker arrived Sunday at a UAE anchorage site after it was rocked by explosions in Gulf waters as Saudi Arabia accused arch-rival Iran of being behind the attack.
The Kokuka Courageous was carrying highly flammable methanol through the Gulf of Oman on Thursday when it came under attack along with the Norwegian-operated Front Altair -- the second assault in a month in the strategic shipping lane.
US President Donald Trump has said the twin attacks had Iran "written all over it" -- rejecting Tehran's vehement denial -- and its key Gulf ally Saudi Arabia has also lashed out against Tehran.
In his first public comments since the attacks, Saudi Crown Prince Mohammed bin Salman said in remarks published Sunday he "won't hesitate" to tackle any threats to the oil-rich kingdom.
"We do not want a war in the region... But we won't hesitate to deal with any threat to our people, our sovereignty, our territorial integrity and our vital interests," he told pan-Arab daily Asharq al-Awsat.
"The Iranian regime did not respect the presence of the Japanese prime minister as a guest in Tehran and responded to his (diplomatic) efforts by attacking two tankers, one of which was Japanese."
The US military on Friday released grainy footage it said showed an Iranian patrol boat removing an "unexploded limpet mine" from one of the tankers.
"Kokuka Courageous has arrived safely at the designated anchorage at Sharjah," the vessel's Singapore-based BSM Ship Management said in a statement Sunday.
The crew, who remained on board, were "safe and well", it said.
A damage assessment and preparations for transferring the ship's cargo would start "once the port authorities have completed their standard security checks and formalities", it added.
- Strategic waterway -
The other ship, the Front Altair, has left Iran's territorial waters, multiple sources said Saturday.
It was "heading toward the Fujairah-Khor Fakkan area in the United Arab Emirates", the ports chief of Iran's southern province of Hormozgan told the semi-official news agency ISNA.
A spokeswoman for Frontline Management, the Norwegian company which owns the ship, said "all 23 crew members of the tanker departed Iran" and flew to Dubai on Saturday.
The UAE's Foreign Minister Sheikh Abdullah bin Zayed Al Nahyan on Saturday called on world powers "to secure international navigation and access to energy", a plea echoed by regional ally Saudi Arabia after the incident sent crude prices soaring.
Thursday's attacks took place southeast of the Strait of Hormuz, a vital corridor connecting the energy-rich states of the Middle East with markets in Asia, Europe, North America and elsewhere.
According to the Energy Information Administration (EIA), 35 percent of the world's seaborne oil passes through the Strait of Hormuz.
Iran, which is struggling with crippling US sanctions, has repeatedly warned in the past that it could block the strait in a relatively low-tech, high-impact countermeasure to any attack by the United States.
Doing so would disrupt oil tankers travelling out of the Gulf region to the Indian Ocean and global export routes.
Iran's parliament speaker said Sunday Washington could be behind the "suspicious" tanker attacks, the official news agency IRNA reported.
"The suspicious actions against the tankers... seem to complement the economic sanctions against Iran considering that (the US) has not achieved any results from them," he told MPs.
The UN has called for an independent investigation.
- 'Iran and proxies' -
The Saudi crown prince also accused "Iran and its proxies" over May 12 attacks on four tankers anchored in the Gulf of Oman off the UAE port of Fujairah.
Attacks on Saudi Arabia by Iran-aligned Yemeni rebels have further fuelled tensions in the region.
On Friday, the kingdom intercepted five drones launched by the Huthi rebels, a Riyadh-led coalition said, in a second assault on an airport in the country's southwest in two days.
The drones targeted Abha airport, where a rebel missile on Wednesday left 26 civilians wounded, and the nearby city of Khamis Mushait, which houses a major airbase, the coalition said.
A Yemeni rebel drone targeting Abha was also intercepted Saturday but it caused no casualties or damage.
The rebels, who have faced persistent coalition bombing since March 2015 that has exacted a heavy civilian death toll, have stepped up missile and drone attacks across the border in recent weeks and warned that coalition airports were valid targets.
Prince Mohammed said Saudi Arabia will "not accept the presence of militias on its borders".
Riyadh has repeatedly accused Tehran of arming the rebels with sophisticated weapons, a charge the Islamic republic denies.