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 US State Department said on Friday it has approved a sale worth $151.8 million to Israel for munitions and munitions support, without submitting it for congressional review.
Flash floods across Nairobi overnight has left at least 23 people dead, authorities said, adding that dozens of cars were swept away and flights at East Africa's biggest airport disrupted.
Russia launched a barrage of drones and missiles at Ukraine overnight on Saturday, damaging infrastructure and killing at least 10 people in the northeast city of Kharkiv, Ukrainian officials said.
President His Highness Sheikh Mohamed bin Zayed Al Nahyan said the UAE will "emerge stronger than before", affirming that the safety and security of citizens, residents, and visitors remain a top priority.
UAE air defences is currently responding to "incoming missile and drone threats", according to alerts from Ministry of Defence and the National Emergency Crisis and Disaster Management Authority (NCEMA).
The Ministry of Defence said UAE air defences intercepted 15 of the 16 ballistic missiles detected in the region on Saturday, with one falling into the sea.