At least half a dozen people have been killed and several others have sustained injuries when Saudi Arabia’s fighter jets carried out a number of airstrikes against residential areas in Yemen's northwestern province of Sa’ada.

Citing anonymous security sources, Yemen's official Saba news agency reported that Saudi warplanes bombarded a residential neighborhood in the Talh area of Sahar district on Friday, killing five people and wounding three others.

Saudi bombs also claimed the life of another Yemeni and inflicted injuries on one more civilian after they hit the victims’ vehicle in Qatabir district. Two other Yemenis were also critically wounded as their house was destroyed as a result of Saudi aerial bombardment in the province's Hidan district.

The Saudi war machine also carried out at least five airstrikes on different districts of the northern province of Jawf, but there has been no immediate report about the possible casualties.

Meanwhile, in retaliation for the deadly Saudi military campaign, Yemen's army and fighters of the popular committees launched mortar and rocket attacks against a number of Saudi bases in the kingdom's southern province of Najran, killing at least one Saudi soldier in the Kers military base. The Yemeni forces also destroyed a military vehicle in the Saudi military base of Qenas in Najran.

Elsewhere, in Yemen’s Jawf province, at least two Saudi mercenaries were slain by Yemeni troops.

Saudi Arabia has been engaged in a deadly campaign against Yemen since March 2015 in an attempt to reinstate the former Yemeni government and undermine the Houthi Ansarullah movement. The war has left at least 11,400 civilians dead, according to a recent tally by a Yemeni monitoring group.

The war-torn Arab country is also grappling with the scarcity of food supplies and outbreak of diseases amid Saudi Arabia’s atrocious airstrikes.

International organizations have repeatedly censured Riyadh for the airstrikes on Yemen’s infrastructure, including hospitals and schools, saying the campaign is taking a huge toll on the civilian population.