Tensions between the United States and Iran have intensified after US forces seized the Iranian-flagged container ship Touska, raising concerns over the future of ongoing diplomatic engagement and casting doubt over a second round of talks.
According to reports, US forces boarded and took control of the vessel on Sunday. Initial information suggests the ship may have been carrying goods that the US considers “dual-use”, meaning items that can serve both civilian and military purposes.
Maritime security sources said on Monday that such materials can potentially be used by armed forces as well.
US Action Near Gulf of Oman
The small container ship is part of the Islamic Republic of Iran Shipping Lines (IRISL) group, which is already under US sanctions.
US Marines carried out the operation near Iran’s Chabahar port in the Gulf of Oman. Tracking data from the MarineTraffic platform showed the ship’s last recorded position at 1308 GMT.
US Central Command (CENTCOM) said the vessel was repeatedly warned over a six-hour period to stop its movement, but it did not comply.
U.S. Marines depart amphibious assault ship USS Tripoli (LHA 7) by helicopter and transit over the Arabian Sea to board and seize M/V Touska. The Marines rappelled onto the Iranian-flagged vessel, April 19, after guided-missile destroyer USS Spruance (DDG 111) disabled Touska’s… pic.twitter.com/mFxI5RzYCS
— U.S. Central Command (@CENTCOM) April 20, 2026
Washington claims the ship violated an American blockade on Iranian ports, following which it was first fired upon and then seized.
Allegations of Dual-Use Cargo on Board
Tensions have further increased amid reports that the vessel was carrying dual-use goods. Sources said preliminary assessments suggest the ship, which had traveled from Asia, may have been transporting such items.
One source noted that the vessel had previously carried goods that fall under the “dual-use” category.
While officials have not disclosed a detailed inventory, CENTCOM reportedly listed materials such as metal, pipes, and electronic components, items that can be used for both industrial and military purposes.
Iran Calls Seizure Illegal, Demands Release
Iran’s Foreign Ministry said on Tuesday that US forces attacked an Iranian commercial vessel named Touska near its coastline. Iranian media described the incident as illegal and a violation of international law.
Tehran demanded the immediate release of the ship, its crew, and their families. The ministry said the action breaches a ceasefire agreement reached earlier this month and warned that the United States would be responsible for any escalation.
Iran’s military accused the US of “piracy”, saying the ship was coming from China when it was intercepted. State media reported that Iranian forces were prepared to confront US troops, but exercised restraint due to the presence of crew members’ families onboard.
IRISL Under Sanctions and Longstanding US Concerns
The US imposed sanctions on IRISL in late 2019, saying the shipping line was the “preferred shipping line of Iranian procurement agents” and allegedly involved in transporting goods for Iran’s ballistic missile program.
Route of the Vessel From China to the Gulf of Oman
According to data analytics firm SynMax, satellite tracking showed the Touska at China’s Taichang port on March 25. It later reached Gaolan port in southern China between March 29–30.
The vessel loaded containers at Gaolan before stopping at Malaysia’s Port Klang anchorage on April 11–12, where additional cargo was loaded.
By the time it reached the Gulf of Oman on Sunday, the ship was fully loaded with containers.
Crew Composition on Board
Sources said the Touska is operated by an Iranian captain and Iranian crew members, though it remains unclear whether the entire crew is Iranian.
Two sources added that IRISL vessels are often controlled by the Islamic Revolutionary Guard Corps and typically staffed mainly by Iranian sailors, though Pakistani crew members are sometimes included.
China Expresses Concern Over US Action
China also reacted to the seizure, expressing concern over the US operation. A spokesperson from China’s Foreign Ministry said Beijing was worried about the forced interception of the Iranian-flagged vessel.
The spokesperson urged all parties to act responsibly and adhere to the ceasefire agreement.
Trump’s Statement and Expanded US Maritime Advisory
US President Donald Trump said on Sunday via Truth Social that the Touska was already under sanctions due to its “history of illegal activities”. He added that US forces were “monitoring what is on the ship.”
Earlier, the US Navy issued an advisory expanding the scope of its maritime blockade on Iran. It said vessels carrying restricted goods or attempting to reach Iranian territory could now be stopped, searched, and inspected under expanded authority.
Restricted goods include weapons and ammunition, according to the advisory.