(Bloomberg) -- A court found a Lithuanian woman guilty of taking part in a scam that used Danske Bank A/S accounts to launder 29.5 billion kroner ($4.2 billion) for wealthy people from Russia and the Baltic countries. 

The 49-year-old woman, who has lived in Denmark for 20 years, will serve eight years in prison, Danish prosecutors said on Thursday. Her sentence adds to a previous jail term received for a similar, but smaller, case.

It’s the biggest laundering trial ever at a Danish court. The woman was found guilty of receiving and transferring funds via 40 shell companies in the period 2008 to 2016, using accounts from Danske’s unit in Estonia. Two more people are charged in the case: a 56-year-old Lithuanian man and a 49-year-old former Russian citizen, the prosecutors said.

“It’s a serious money-laundering offense, due to the record high amount and due to the professional organization behind it,” Lisette Jorgensen, Denmark’s State Prosecutor for Serious Economic and International Crime, said in a statement.

The case was discovered when Denmark’s authorities started broader investigations into illicit transactions after Danske, the country’s biggest lender, admitted it had managed suspicious flows through Estonia. Danske said in April it’s in talks with US and Danish authorities on ending the case and faces fines that are likely “to be material.”

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