A military coalition led by Saudi Arabia has imposed inspections on all ships entering Yemen.
The regulator has asked the telecommunications operator to clarify information related to one of its businesses.
The five-day humanitarian truce in Yemen came into effect at 11 pm on Tuesday.
Obama’s summit with the GCC countries begins Wednesday evening and continues on Thursday.
Adel al-Jubeir said the summit would focus on conflicts in Syria and Iraq and also on the fighting in Yemen.
Ma’aden, the Gulf’s largest miner, is currently exporting around 70 to 80 per cent of the smelter’s production.
The oil giant has completed a massive investment programme which took its output capacity up to 12 million bpd.
Residents said three air strikes hit a base for army units loyal to the Houthis in the north of the capital.
The Kingdom pumped 10.308 million barrels of oil per day in April, compared to 10.29 million bpd in March.
The company did not give figures on estimated reserves or production rates for the new fields.
Analysts and diplomats in the Middle East described King Salman’s decision to skip the meeting at Camp David this week as a snub.
If introduced in the Kingdom, REITs would offer tax benefits, especially for foreign investors.
King Salman has nominated Crown Prince Mohammed bin Nayef to attend the summit in Washington and Camp David, Maryland.
Yemen’s Houthi militia said tribesmen shot down the aircraft.
Total production from the Wafra onshore oilfield is around 190,000 barrels per day.
Saudi Arabia has offered a five-day ceasefire starting on Tuesday evening to allow delivery of humanitarian supplies into the country.
The firm has launched an advisory service for structuring and managing the assets of the Islamic charitable foundations known as awqaf.
The pilot of a second jet in the same squadron could not see if the pilot had ejected from the jet.
The summit coincides with the start of a five-day humanitarian truce in Yemen.
Once completed in 2018, the $1.2 billion Kingdom Tower will be over one kilometre high.
Steve Bertamini has been appointed chief executive effective from May 18, the lender said in a bourse statement.
Policeman Maged al-Ghamdy was patrolling the area at 7:30 p.m. local time when he was shot from an unidentified car, the official news agency said.
Both leaders will “build on their close consultations on a wide range of regional and bilateral issues,” White House spokesman said.
The rapprochement between two of the Middle East’s biggest powers already appears to be paying dividends in Syria.
So far, MSCI only had provisional indexes covering the $570 billion Saudi stock market, which is set to open to foreign investors in June.
Scores of civilians were reportedly killed and thousands forced to flee their homes after the coalition declared the entire governorate a military target.
Figures from Asia’s top three importers show that the Kingdom is more or less holding its ground in market share, writes Reuters’ columnist Clyde Russell.
Many barriers such as strict foreign ownership limits, rules for settling traders and its long way into MSCI index are some of the factors curbing a flood of foreign money.
The state-backed King Abdulaziz City for Science and Technology said it had signed an agreement with Antonov to produce the AN-32 aircraft.
US Secretary of State John Kerry, who is visiting Riyadh, welcomed the proposal.