A small oil tanker from the United Arab Emirates traveling through the Strait of Hormuz entered Iranian waters and turned off its tracker three days ago, leading the US to suspect Iran seized the vessel amid heightened tensions in the region.
Iranian state media quoted its Foreign Ministry spokesman as saying the Islamic Republic had aided a foreign oil tanker with a malfunction, but the report didn't explain further.
Oil tankers previously have been targeted in the wider region amid tensions between the US and Iran over its unravelling nuclear deal with world powers.
The Panamanian-flagged Riah turned off its transponder late Saturday night but an Emirati official said it sent no distress call. The concern over its status comes as Iran continues its own high-pressure campaign over its nuclear program after President Donald Trump unilaterally withdrew America from the accord over a year ago.
Recently, Iran has inched its uranium production and enrichment over the limits of its 2015 nuclear deal, trying to put more pressure on Europe to offer it better terms and allow it to sell its crude oil abroad.
However, those tensions also have seen the US send thousands of additional troops, nuclear-capable B-52 bombers and advanced fighter jets into the Mideast. Mysterious attacks on oil tankers and Iran shooting down a US military surveillance drone has added to the fears of an armed conflict breaking out.
The 58m Riah typically made trips from Dubai and Sharjah on the UAE's west coast before going through the strait and heading to Fujairah on the UAE's east coast. However, something happened to the vessel after 11 p.m. on Saturday, according to tracking data.
Capt. Ranjith Raja of the data firm Refinitiv told The Associated Press on Tuesday that the tanker hadn't switched off its tracking in three months of trips around the UAE. 'That is a red flag,' Raja said.
A US defence official later told the AP that the Riah was in Iranian territorial waters near Qeshm Island, which has a Revolutionary Guard base on it.
'We certainly have suspicions that it was taken,' the official said. 'Could it have broken down or been towed for assistance? That's a possibility. But the longer there is a period of no contact ... it's going to be a concern.'
The official spoke on condition of anonymity as the matter did not directly involve US interests.
An Emirati official, speaking on condition of anonymity to discuss an ongoing security matter, said the vessel 'did not emit a distress call.'
'We are monitoring the situation with our international partners,' the official said.
Iran's IRNA news agency quoted Foreign Ministry spokesman Abbas Mousavi as saying Iran had helped an unnamed tanker by towing it to an Iranian port, without elaborating. The report did not identify the ship, nor explain the malfunction and the lack of a distress call or any crew contact with home.
The ship's registered owner, Dubai-based Prime Tankers LLC, told the AP it had sold the ship to another company called Mouj Al-Bahar. A man who answered a telephone number registered to the firm told the AP it didn't own any ships. The Emirati official said the ship was 'neither UAE owned nor operated' and carried no Emirati personnel, without elaborating.
Separately Tuesday, Iran's Supreme Leader Ayatollah Ali Khamenei said his country will retaliate over the seizure of an Iranian supertanker carrying 2.1 million barrels of light crude oil. The vessel was seized with the help of British Royal Marines earlier this month off Gibraltar over suspicion it was heading to Syria in violation of European Union sanctions, an operation Khamenei called 'piracy' in a televised speech.
'God willing, the Islamic Republic and its committed forces will not leave this evil without a response,' he said. He did not elaborate.
British Foreign Secretary Jeremy Hunt said Saturday that Britain will facilitate the release of the ship if Iran can guarantee the vessel will not breach European sanctions on oil shipments to Syria.
Iran previously has threatened to stop oil tankers passing through the strait, the narrow mouth of the Persian Gulf through which 20% of all crude oil passes, if it cannot sell its own oil abroad.
Meanwhile, Iranian Foreign Minister Mohammad Javad Zarif seemed to suggest in a television interview that the Islamic Republic's ballistic missile program could be up for negotiations with the US, a possible opening for talks as tensions remain high between Tehran and Washington. Zarif suggested an initially high price for such negotiations — the halt of American arms sales to both Saudi Arabia and the United Arab Emirates, two key US allies in the Persian Gulf.
Iran's ballistic missile program remains under the control of the Iranian paramilitary Revolutionary Guard, which answers only to Khamenei.
Zarif brought up the ballistic missile suggestion during an interview with NBC News that aired Monday night while he is in New York for meetings at the United Nations. He mentioned the UAE spending US$22 billion and Saudi Arabia spending US$67 billion on weapons last year, many of them American-made, while Iran spent only US$16 billion in comparison.
'These are American weaponry that is going into our region, making our region ready to explode,' Zarif said. 'So if they want to talk about our missiles, they need first to stop selling all these weapons, including missiles, to our region.'
Iran's mission to the United Nations later called Zarif's suggestion 'hypothetical.'
'Iran's missiles ... are absolutely and under no condition negotiable with anyone or any country, period,' the mission said.
However, US Secretary of State Mike Pompeo seized on Zarif's comments in comments at a Cabinet meeting Tuesday at the White House as a sign the US maximalist campaign against Iran was working.
'For the first time, the Iranians have said that they're prepared to negotiate about their missile program,' he said. 'So we will have this opportunity, I hope.'
Trump during his time in the White House has pointed to arms sales to the Mideast as important to the American economy, so it remains unclear how he'd react to cutting into those purchases. In pulling out of the Iran nuclear deal, Trump in part blamed the accord not addressing Iran's ballistic missile program. The US fears Iran could use its missile technology and space program to build nuclear-capable intercontinental ballistic missiles, something Tehran denies it wants to do.
Ayham Kamel, an analyst for the Eurasia Group, said Zarif's comments were aimed at show flexibility for possible.
'I think there's probably some space before we get to any serious negotiation but several regional powers are already paving the way for some form of talks between the two sides,' he said.
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