Two employees and a third man from Nordea's Vaasa branch are accused of involvement in an exceptional crime involving Nordea and its millionaire customers familiar from the public.
One customer had time to export more than 670,000 euros.
There was a danger that funds had also been taken from the other three millionaire men, but the police intervened.
If the perpetrators had managed to clear the accounts of all the men, they could have received as much as more than 200 million euros, according to the prosecutor.
The case will continue on Tuesday for the second day in the Ostrobothnian District Court.
Today, the main purpose is to go through written evidence.
IS monitors the session on site.
The sitting will begin at 9 am in the morning.