Riyadh has lifted its ban on international flights and access through land crossings and ports, in place since December 21 to limit the spread of a new coronavirus strain.
GCC states are scheduled to meet in Riyadh for the annual summit on Tuesday, where a much-anticipated resolve to the crisis is expected.
The government expects revenues of 8.64 billion riyals based on an oil price of $45 dollars a barrel, 19 percent less than in 2020.
The GCC has invited Qatar's emir in an effort to smooth relations between Saudi Arabia and the Gulf Kingdom.
Saudi King Salman invited Egypt's President Abdel Fattah Al-Sisi to a much-anticipated GCC summit in Riyadh, according to reports.
The suspension of commercial passenger flights has been extended by Saudi authorities over concerns of a new variant of the coronavirus.
Foreign ministers of Saudi Arabia, UAE, Bahrain, Oman and Kuwait took part in the meeting hosted by Manama, while Qatar was represented by its minister of state for foreign affairs.
Oman's health minister became the first to receive the Pfizer vaccine.
The official gave no specific date or details of what information the investigators would seek from Ghosn.
Tunisia's foreign ministry said it refuses to normalise relations with Israel.