Qatar Finance Minister Ali Sharif Al-Emadi was arrested for questioning over allegations of embezzlement, abuse of power and crimes related to the public sector, a statement carried by state news agency QNA said on Thursday.
An investigation is underway, the statement added.
Emadi has been minister of finance since 2013 and sits on the board of its powerful $300 billion sovereign wealth fund, the Qatar Investment Authority.
He is also chairman of the board of directors of Qatar National Bank.
Emadi steered Qatar's economic policies during the 2014-2015 oil price crash that prompted the country to accelerate plans to diversify the economy.
He was named as 2020’s best minister in the region by The Banker, an international financial magazine that organises an annual celebration of finance ministers.
Qatar, which next year will host the FIFA World Cup, has invested heavily in infrastructure over the past few years ahead of the event, which means spending on major projects is set to decrease this year, the finance ministry has said.
The Pentagon said on Wednesday that US strikes 10 days ago had degraded Iran's nuclear programme by up to two years, suggesting the US military operation likely achieved its goals despite a far more cautious initial assessment that leaked to the public.
Four people died, 38 were missing and 23 survived after a ferry carrying 65 people sank near the Indonesian island of Bali, the country's Search and Rescue agency said on Thursday.
The Arab League, which includes the UAE, has condemned statements made by Israel’s Justice Minister Yariv Levin calling for the annexation of the occupied West Bank.
A fire that shut London's Heathrow airport in March, stranding thousands of people, was caused by the UK power grid's failure to maintain an electricity substation, an official report said on Wednesday, prompting the energy watchdog to open a probe.
US President Donald Trump urged Hamas on Tuesday to agree to what he called a "final proposal" for a 60-day ceasefire with Israel in Gaza that will be delivered by mediating officials from Qatar and Egypt.
The national defence and foreign affairs committees of the UAE and Israel on Wednesday held a virtual meeting, emphasising the need to adopt a "responsible political approach" in dealing with regional crises.
Sheikh Abdullah bin Zayed Al Nahyan, Deputy Prime Minister and Minister of Foreign Affairs, and his counterpart in Ghana, Okudzeto Ablakwa, have explored ways to further strength bilateral ties during a phone call.
A guided travel simulation for children with autism spectrum disorders was held at Dubai International Airport, in an effort to ease travel readiness for children and their families.