Saudi Arabia's civil defense issued warnings of possible danger in the eastern cities of Dammam, Dhahran, Al-Ahsa and Abak amid an escalation in hostilities against Yemen.
This follows a series of deadly Saudi attacks across Yemen, including the bombing of al-Hadara market in al-Waziya district, Tais governorate, on Friday.
Three airstrikes hit the market, with initial reports indicating that more than 30 people were killed or injured, according to the Yemen Saba News Agency.
The attacks came against the backdrop of a wider escalation that resulted in increasing civilian casualties. The Ministry of Health in Yemen reported that nine civilians, including three children, were killed and 14 others, including one child, were injured on Thursday alone.