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.
US President Donald Trump has expanded a list of countries subject to a full travel ban on Tuesday, prohibiting citizens from an additional seven countries, including passports from Syria and Palestine, from entering the United States.
The alleged gunman shot dead by police during Sunday's attack on Australia's Bondi beach was originally from the southern Indian city of Hyderabad and his family did not know about his 'radical mindset', Indian police said on Tuesday.
US President Donald Trump has ordered on Tuesday a "blockade" of all sanctioned oil tankers entering and leaving Venezuela, in Washington's latest move to increase pressure on Nicolas Maduro's government, targeting its main source of income.
The Israeli military have shot dead a 16-year-old Palestinian during a raid on the town of Tuqu' on Monday, the Palestinian health ministry said, the latest deadly incident in a recent surge of violence in the Israeli-occupied West Bank.
Motorists have been advised to exercise caution on the road after UAE weather bureau issued a yellow dust alert and warned of visibility dropping to less than 2,000 metres in some parts.
A 4.3 Magnitude Earthquake has been recorded in the Eastern Province of Saudi Arabia on Wednesday at 2:11 am UAE time, according to weather authorities.