The issue focused on the government's tax policy, with public concern about high levels of tax avoidance.

A law enforcement official said that after this type of situation it is more likely to be legal tax evasion.

"It's not something you can claim as a loss in any form. It's always hard to say if it's criminal or not. In most cases, it is," he said.

In order to conduct their investigation, police had to know who was behind the financial crime.