The Saudi-led coalition entered the conflict in March 2015, and has faced criticism for a campaign of airstrikes that has killed civilians and destroyed hospitals and markets.
Yemeni government forces, backed by the United Arab Emirates, entered Hodeida airport on Tuesday, the UAE said, as the fight for control of the rebel-held port city intensifies.
"We took time to inspect and disassemble these to figure out the source ... and we can say that these elements are military-grade materials imported from Iran to the Houthi militias".
During the press conference, Colonel al-Maliki reviewed the efforts of the Coalition Forces in terms of securing the work of the global and worldwide humanitarian organisations in all Yemeni territories, protecting the roads and corridors of the comprehensive humanitarian operations plan in Yemen and granting permits for relief and humanitarian aid through land, air and sea, which last week included 65 flights, carried more than 4,000 passengers, 41 permits for ships anchored in all Yemeni ports, and one for the shipment of aid arriving by road.
Last week Human Rights Watch called warring parties to create corridors of safe passage for civilians trapped in the city and to facilitate the flow of aid and commercial supplies.
The Saudi-led coalition and its mercenaries began a massive operation on Wednesday to bring Yemen's port city under their control.
It lies just eight kilometres from the city's port, through which three-quarters of Yemen's imports pass, providing a lifeline for some 22 million people dependent on aid.
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"The first challenge facing us is the fragile humanitarian situation because of the importance of Hodeida", Gargash said. "Coalition will continue to work with aid agencies on the ground to ensure that once the port is liberated we will quickly increase the capacity of the port".
"From our perspective, three years of war is enough", said Anwar Gargash, Minister of State for Foreign Affairs - UAE.
Griffiths returned to Sanaa on Saturday for talks.
The spokesman for Yemen's armed forces says the airport is still controlled by the Yemeni forces.
The Yemeni army, supported by allied fighters from the Popular Committees and those of the Houthi Ansarullah movement, are resisting against the enemy attacks. He declined to offer casualty figures for the Saudi-led coalition, though Emirati officials have so far announced the deaths of four of its soldiers in the offensive.
Meanwhile Coalition forces have accused the Iran-back Houthis of directly targeting civilians in the Tehama region, north-west of Hodeidah, in direct violation of the Fourth Geneva Convention, WAM reported.