The pro-Saudi militias stationed in Ta'iz sustained heavy losses after they came under attack by, at least, two Zalzal-2 ballistic missiles; FNA reported.

Eyewitness said a large number of pro-Saudi mercenaries were also wounded in the Yemeni missile attacks.

They said that several military vehicles of the militias were also destroyed in the ballistic missile attacks.

In a relevant development earlier on Sunday, Yemen's Army, backed by popular forces, launched heavy missile and artillery attacks on the gatherings of the Saudi-led forces and Saudi Army bases in the kingdom’s Southwestern regions of Jizan and Najran in retaliation for recent killings of Yemeni people in attacks by the Saudi-led coalition.

A military source told Al Masirah TV network the retaliatory attacks on Al-Hamad and al-Thawilah military bases in Najran region were carried out by the Yemeni army's missile and artillery units in cooperation with fighters from allied Popular Committees.

The Yemeni Army and its allies also launched mortar attacks on several gatherings of Saudi-backed mercenaries, West of al-Tuwal Crossing in Najran region, the source added.

In a separate development, the Saudi-led forces' gatherings in al-Khouyeh and Jalah military base in Najran also came under intensive attacks as the Yemeni forces unleashed a barrage of artillery fire against the Saudi Army positions, in an apparent retaliation for the Riyadh regime’s incessant aerial bombardment campaign against the Yemeni people.

More than 12,800 Yemenis, including women and children, have been killed in the course of the Saudi military aggression against neighboring Yemen since March 2015.

This is while international right groups have repeatedly condemned Riyadh over its onslaught against Yemen. They have also warned of a humanitarian crisis in the impoverished country.

The Saudi campaign was launched with the aim of reinstating Yemen’s former president Abd Rabbuh Mansur Hadi.

Hadi, a loyal Riyadh ally, resigned last year and fled to the Saudi capital. He later returned to the country’s port city of Aden.

Hadi has rejected a United Nations peace roadmap, saying the initiative favors Ansarullah movement, while the movement is the main popular base which  has been defending the country against the Saudi invasion.

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