Estonia's prosecutor general is expanding the scope of its investigation into the alleged role of Danske Bank A/S' now-defunct local branch in laundering billions of euros, a spokeswoman told Reuters.

The prosecutor will investigate more than 10 cases concerning transactions of up to $2 billion, the spokeswoman said. It previously investigated two separate cases involving money flows of $300 million.

The Copenhagen-based bank is still grappling with a money laundering scandal that centers on its former branch in Tallinn, which is suspected to have processed billions of "suspicious" transactions for nonresident customers.