SANA’A -- Yemen's Ansarullah-led armed forces warned employees, workers and civilians on Sunday to stay away from Saudi oil facilities, declared Saudi airspace unsafe with the exception of the holy cities of Mecca and Medina, and advised Aramco shareholders to sell their holdings "before it is too late".

A Yemeni military spokesman said a Saudi reconnaissance helicopter had been shot down near the border and reported continued clashes in Ta'izz governorate.

A military source affiliated with the Yemeni Armed Forces told the Sana’a-based Saba news agency that the warning has been issued and that the kingdom's airspace is "not safe except the airspace of Mecca and Medina".

The source also called on shareholders in Saudi Aramco to sell their shares "before it is too late" to avoid potential losses. The statement follows earlier warnings in which the armed forces' spokesman declared Aramco facilities "legitimate targets".

Saudi military spokesman, Turki al-Malki, said in a statement on X that an AH-6i reconnaissance helicopter belonging to the Ministry of National Guard crashed inside Saudi territory in the Najran region "due to a technical malfunction," killing its two-officer crew. 

Yemeni Armed Forces spokesman Brigadier General Yahya Saree, however, said on X that Yemeni forces had shot down the helicopter "off Najran" while it was carrying out "hostile operations" against Yemeni positions along the border, and that it was brought down "with an appropriate weapon".

Saree also said Saudi Arabia had carried out 110 air and missile strikes against the capital, Sana'a, and several other provinces over the previous 24 hours, targeting civilian infrastructure in Sana'a as well as in the provinces of Hudaydah, Ta'izz, Amran, Hajjah, Sa'adah, Al-Jawf, Al-Dhale' and Marib.

The strikes were carried out by F-15 and Typhoon fighter jets that took off from Khamis Mushait and Taif air bases, with missile attacks launched from the Najran area, he said.

He said the strikes had caused more than 30 casualties, including killed and wounded, the majority of them women and children, and that the total number of air and missile strikes carried out by Saudi Arabia since the start of the recent escalation against the country had reached 2,652.

Fighting in Ta'izz governorate has intensified in recent weeks, with Ansarullah-led forces seeking to consolidate control over approaches to the city. In early October, Yemeni forces captured the strategic al-Misrakh area south of Ta’izz and severed a key supply route between Ta’izz and Aden with the capture of al-Turbah.

Yemen has previously announced missile and drone operations against Saudi airports and Aramco facilities in Jeddah, Riyadh and Najran, describing them as retaliation for Saudi airstrikes on Yemeni cities. Saudi Arabia has intensified airstrikes across Yemen in recent days.