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.
Israeli forces raided Jenin in the occupied West Bank on Tuesday in an operation that the Palestinian health ministry said killed seven Palestinians, including a doctor, and left nine others wounded.
Recovery teams refloated the huge cargo vessel in the Port of Baltimore two months after the boat crashed into the Francis Scott Key bridge and caused the span to collapse.
An infected blood scandal in Britain was no accident but the fault of doctors and a succession of governments that led to 3,000 deaths and thousands more contracting hepatitis or HIV, a public inquiry has found.
Iranian President Ebrahim Raisi, seen as a potential successor to Supreme Leader Ayatollah Ali Khamenei, was killed in a helicopter crash in mountainous terrain near the Azerbaijan border, officials and state media said on Monday.
The International Criminal Court prosecutor's office said on Monday it had requested arrest warrants for Israeli Prime Minister Benjamin Netanyahu, his defence chief and three Hamas leaders for alleged war crimes.