There has been evidence that Iran violated UN Resolution 2216 by providing Houthi militias with arms and munitions, according to a UN experts' report that showed Tehran's involvement in Yemen.
Yemen, one of the Arab world's poorest countries, is embroiled in a proxy war between the Houthis, who are allied with Iran, and a US -backed military coalition headed by Saudi Arabia.
Iran has strongly denied arming the Huthis and in December 2017 accused the United States of presenting "fabricated" evidence that a November 4 missile fired at Riyadh airport was Iranian-made.
The panel added that one of the rebel missile attacks which targeted Riyadh's global airport "changed the tenor of the conflict and has the potential to turn a local conflict into a broader regional one".
During a security council meeting on December 19, U.S. Ambassador Nikki Haley called the Huthis' repeated firing of missiles at targets in Saudi Arabia "a flashing red siren" demanding action at the UN.
The panel also said it was investigating whether Iran had sent "advisers" to help the Houthis in their war against the Saudi-led coalition.
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The panel said it found that design features of the missile debris were "consistent with those of the Iranian-designed and manufactured Qiam-1 missile" and "almost certainly produced by the same manufacturer".
Saudi Arabia has led a bombing campaign against Houthi rebels since March 2015.
More than 8,750 people have died in the war and the country is facing what the United Nations has described as the world's worst humanitarian crisis.
Yemen's defenseless people have been under massive attacks by the coalition for nearly three years but Riyadh has reached none of its objectives in Yemen so far.
The findings of the report are expected to enhance accusations launched by US President Donald Trump and his administration against Iran for providing Houthis with weapons, including ballistic missiles.
"#KSA bombs #Yemen to smithereens, killing 1000's of innocents including babies, spreads cholera and starvation, but of course blames Iran", Zarif tweeted in November.