A ship loaded with rockets and explosives which Yemen said it had intercepted last month came from Iran and the arms were destined for Shiite rebels, a security official said on Sunday.
"The boat was heading towards the (Red Sea) port of Al-Mukha" and the arms "were destined for the Huthi rebels in Saada," the northern stronghold of the Shiite fighters, the Yemeni security official told AFP.
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The vessel "came from Iran and was carrying arms and explosives among them surface-to-air missiles SAM-2 and SAM-3," state news agency Saba reported on Sunday, adding that the crew of eight Yemeni nationals were being questioned.
The ship was stopped on January 23 in Yemeni territorial waters and flew several fake flags, authorities have said.
An offshoot of Shiite Islam, Zaidis are a minority in mainly Sunni Yemen but form the majority in the mountainous north.
From 2004 the Huthis fought six wars with central government forces before signing a truce in February 2010. The rebellion claimed thousands of lives.
The government accuses the rebels of being backed by Shiite-dominated Iran, charges which the Zaidis deny.