The Saudis have also deployed Patriot missile batteries created to counter tactical ballistic missiles.
The advance came amid heavily fighting along the Yemen-Saudi border over the past week, with both sides bringing a growing amount of armored vehicles into the battle.
“How many civilians will die in unlawful airstrikes in Yemen before the coalition and its USA ally investigate what went wrong and who is responsible”, said Joe Stork, the group’s deputy Middle East director.
A first round of peace talks adjourned on Sunday and the U.N.’s envoy to Yemen, Ismail Ould Cheikh Ahmed, said the two sides would meet again on January 14.
Saudi Arabia confirmed the attack but said the missile had been intercepted by the kingdom’s air defense systems, state media report as cited by Reuters.
Fighting, meanwhile, continues to rage in several parts of the country between the Houthis and their allies on one hand and Saudi-backed pro-Hadi forces on the other.
A Saudi civil defense official says shelling from Yemen has killed a Saudi citizen and two Indian workers.
Armed Yemeni tribesmen from the Popular Resistance Committees, supporting forces loyal to Yemen’s Saudi-backed President Abedrabbo Mansour Hadi, hold a position in the area of Sirwah, west of Marib city, December 18, 2015.
The humanitarian crisis in Yemen has also worsened, with more than 21 million people – four-fifths of the population – now in need of aid.
At least 68 people are reported to have been killed in fresh clashes between government troops and Houthi rebels in north-west Yemen near the Saudi border.
A notable absence was Saudi Arabia, Yemen’s powerful northern neighbor, which was not on the list of speakers.
According to the global body’s latest count, at least 2,500 civilians have been killed in the conflict since the coalition began its bombing campaign at the end of March.
The U.N.is supposed to provide technical assistance to Yemen’s government to look into human rights abuses, but Zeid said member states’ approval for needed U.N. personnel is pending.