In the surprise attack launched late on Saturday, July 22, the domestically-made ballistic missiles hit Saudi targets accurately, according to local media reports.
The missile attack inflicted heavy damages on the Saudi oil refineries in Yanbu, the reports said on Sunday.
The forces of the Arabian Peninsula country have already hit Saudi positions with various homegrown missiles, including "Qaher-1”, which has a range of 500 kilometers, and "Borkan-1”.
The solid propellant and Scud-type Borkan-1 missile reportedly has a range of more than 800 kilometers.
Since March 25, 2015, Saudi Arabia and some of its Arab allies have been carrying out airstrikes against the Houthi Ansarullah movement in an attempt to restore power to fugitive former President Abd Rabbuh Mansour Hadi, a close ally of Riyadh.
Over 12,000 Yemenis, including thousands of women and children, have lost their lives in the deadly military campaign.