Scores of civilians were reportedly killed and thousands forced to flee their homes after the coalition declared the entire governorate a military target.
US Secretary of State John Kerry, who is visiting Riyadh, welcomed the proposal.
US Secretary of State John Kerry began negotiations in Riyadh on Thursday to pause the campaign of airstrikes launched by a Saudi-led coalition on March 26.
Final opinion polls showed PM David Cameron’s Conservatives and Ed Miliband’s opposition Labour Party almost in a dead heat.
One shell landed near security forces patrolling near the prison in Najran, killing an officer, while another killed four Saudi civilians.
U.S. Secretary of State John Kerry said the United States was deeply concerned with the worsening humanitarian conditions in Yemen.
The strikes occurred after Yemen’s Houthi fighters fired mortar bombs and rockets at a Saudi Arabian border town on Tuesday.
The projectiles struck a girls’ school and a hospital in Najran, which is only two miles from Yemen’s border, officials said.
The statement comes as the UN prepared a plan to set up an air-bridge to bring humanitarian workers into the country.
The Dubai-based channel also quoted Adel al-Jubeir as warning Yemen’s dominant Houthi group against exploiting any truce in the country in its favour.
Saudi Arabia denied that a major ground operation was under way by the anti-Houthi coalition it leads but declined to comment on special forces.
The statement comes as a group of Arab forces reportedly landed in Yemen to fight Houthi tribesmen.
The aircraft also targeted a camp of forces loyal to former president Ali Abdullah Saleh, in Arhab district north of the city.
The United Nations says the conflict in Yemen has killed 600 people, wounded 2,200 and displaced 100,000 since September.
King Salman named his nephew Mohammed bin Nayef, 55, and his son Mohammed bin Salman, 30, as his heirs on Wednesday.
Sofian Chourabi and Nadhir Ktari were kidnapped about eight months ago.
So far the fighting and air strikes have killed over 1,000 people since the bombings started on March 26.
The court also sentenced 11 other suspects, most of them in absentia, in the same case to terms ranging from 10 years to life in jail.
A spokesperson said that the country will present a plan in Saudi Arabia next month, requesting membership into the GCC.
Interior Minister Mohammed bin Nayef has been appointed King Salman’s new heir, replacing Prince Muqrin.
An NGO has filed a complaint with the public prosecutor accusing 39 prominent figures, including Tawakul Karman, of treason.
Iran said the plane was carrying humanitarian aid to Sanaa.
The interior ministry did not name the detainees, say when they were held or elaborate on the nature of the planned attacks.
The summit, in Riyadh, is expected to touch on Iran’s nuclear programme and developments in Yemen.
Riyadh announced last week that it was ending its nearly five-week-old bombing campaign, except in places where the Houthis were advancing.
There were no immediate reports on the extent of casualties.
A Saudi-led alliance began bombing Iranian-allied Houthi militia in Yemen last month.
The bombings were the first raids on Sanaa since a Saudi-led alliance said last week it was scaling back a campaign against Iranian-allied Houthi militias.
The total included legitimate trade deals in the course of lobbying in the run up to the 2010 vote for the tournament, the UK’s Mail on Sunday said.
ISNA said two Iranian cargo planes carrying food and medicine to Yemen had been forced by Saudi jets to leave Yemeni airspace.