At least 30 people have been killed ?in a Saudi airstrike�in northwestern Yemen, a day after six troops were killed at�a military base of the kingdom near the�border.���

The fatalities came�on Saturday during an air raid on�residential buildings in the�Dhahian district in the Sa�ada province.

Earlier in the day, Saudi warplanes carried out�nine offensives against two places in the southwestern Ta'izz province�s capital of the same name, the local�al-Masira TV reported.

Yemen�s official Saba Net news agency said the airstrikes had left a number of civilians dead and injured.

The attacks came a day after Yemeni snipers killed six troops at the al-Mahruq military base in Najran.

A British officer, affiliated with the infamous US security firm formerly known as Blackwater, was also�killed in the al-Wazi�iyah district of the province, a�military source said.

Meanwhile,�US drones bombed an area near�schools in the Dhubab district in the Tai'zz province.

On Friday, Saudi Foreign Minister Adel al-Jubeir said US and UK military advisers were present at�a command room in�Riyadh in the�war on Yemen, working alongside Saudi forces.

�We have British officials and American officials and officials from other countries in our command and control center," he�said after a meeting with US Secretary of State John Kerry.

"They know what the target list is and they have a sense of what it is that we are doing and what we are not doing,� the Saudi foreign minister added.

The Saudi regime has been carrying out airstrikes against the Arab world�s poorest nation since March 26, 2015. More than 7,500 people have been killed and over 14,000 others injured since the onset of the campaign.

By Press TV