Officers at the National Bureau of Investigation believe that a significant part of rooftop snow clearing work performed in downtown Helsinki has been completed using black market labour.
Officers have launched a probe to determine whether the company in question is guilty of aggravated tax fraud, aggravated accounting offenses and aggravated pension contribution fraud.
The NBI believes that the company at the centre of its investigations covered up its off-book payments by fabricating a network of bogus subcontractors. The company then used the fictitious contractors as a cover to avoid the payment of hundreds of thousands of euros in taxes and pension contributions.
So far about four individuals have been detained under suspicion of committing the financial crimes. Police have also questioned scores of others in connection with the case.
Police are calling on housing cooperatives, property managers and other users of rooftop cleaning services to be vigilant in their business dealings.
The NBI expects to complete the preliminary investigation by early autumn.
