Court documents reveal that a woman suspected by British authorities of having ill-gotten wealth spent 600,000 pounds ($1.09 million) in one day at upmarket London department store Harrods and once forked out 30,000 pounds on chocolates.

Key points: UK authorities are demanding Zamira Hajiyeva prove where her money comes from

UK authorities are demanding Zamira Hajiyeva prove where her money comes from They say she spent 16 million pounds over a decade at Harrods, including 600,000 pounds in one day

They say she spent 16 million pounds over a decade at Harrods, including 600,000 pounds in one day Ms Hajiyeva's husband is in prison in Azerbaijan for fraud and embezzlement

Zamira Hajiyeva is the first person subject to an Unexplained Wealth Order, nicknamed the 'McMafia laws', which allows UK authorities to seize assets from people suspected of corruption or links to organised crime until the owners account for how they were acquired.

Britain's National Crime Agency wants to know where Ms Hajiyeva, whose banker husband is in jail in Azerbaijan, got the money to fund her spending and buy two UK properties worth 22 million pounds, including a house just around the corner from Harrods.

Investigators say Ms Hajiyeva spent 16 million pounds at Harrods between 2006 and 2016, using 35 credit cards issued by a bank led by her husband.

Harrods records disclosed at the High Court detail spending that includes 5.75 million pounds at jewellers Boucheron and Cartier, 1 million pounds in Harrods' toy department and 30,000 pounds at chocolatier Godiva.

UK authorities have seized this London house, not far from Harrods, from Zamira Hajiyeva. ( Reuters: Simon Dawson )

Harrods said in a statement that it complied with "the strongest anti-money laundering policies".

"In this instance, where Harrods cooperated with a wider investigation, there has never been any suggestion that Harrods has operated in any way other than in full compliance with the highest regulatory and legal standards," it said.

Ms Hajiyeva's husband, former International Bank of Azerbaijan chairman Jahangir Hajiyev, was sentenced to 15 years in jail in 2016 for fraud and embezzlement.

Ms Hajiyeva, 55, denies wrongdoing and has been granted permission to challenge her wealth order at the Court of Appeal. She is also fighting extradition to Azerbaijan.

AP