Britain's Royal Navy said Thursday one of its warships seized Iranian weapons, including surface-to-air-missiles and engines for cruise missiles, from smugglers in international waters south of Iran early this year.
A helicopter from the HMS Montrose frigate spotted speedboats moving away from the Iranian coast on Jan. 28 and Feb. 25 and dozens of packages containing the advanced weaponry were confiscated, the Royal Navy said in a statement.
"The seized packages were returned to the U.K. for technical analysis which revealed that the shipment contained multiple rocket engines for the Iranian produced 351 land attack cruise missile and a batch of 358 surface-to-air missiles," it added.
It did not say where the missiles were bound, but said the 351 cruise missile, with a range of 1,000 kilometers, is often used by Yemen's Houthi group to target Saudi Arabia and the United Arab Emirates.
The U.S. Navy destroyer USS Gridley supported the February seizure, the Royal Navy said. Both seizures occurred while HMS Montrose was on routine maritime security operations, it added.
"This action demonstrates that we will not allow irresponsible and aggressive acts by Iran to go unchecked on land, sea, and air," U.S. Central Command spokesperson Colonel Joseph Buccino said in a statement.
The Iranian government did not immediately respond to a request for comment.
Houthi officials were not immediately available to comment.
Riyadh and Abu Dhabi have been at war with the Iran-aligned Houthis since 2015, in a conflict widely seen as a proxy war between the two Western-backed Arab Gulf states and Iran.