The US Navy said Saturday it had seized one million rounds of ammunition along with rocket fuses and propellant being smuggled on a fishing trawler from Iran to war-torn Yemen.
The cargo was discovered on Thursday "during a flag verification boarding", the Bahrain-based United States Fifth Fleet said in a statement, noting it was the "second major illegal weapons seizure within a month" along the maritime route.
"This significant interdiction clearly shows that Iran's unlawful transfer of lethal aid and destabilising behaviour continues," Vice Admiral Brad Cooper said.
"US naval forces remain focused on deterring and disrupting dangerous and irresponsible maritime activity in the region."