Image: Yle

The Finnish Foreign Ministry has uncovered a large spying network that could have been running for up to four years. The matter was first reported by MTV3, and was confirmed to Yle by Finland's Security Police, SUPO.

A Supo investigation is underway.

Serious data breaches were uncovered during the early part of this year, with Finnish authorities suspecting Chinese and Russian intelligence of running the surveillance.

The espionage has been kept under wraps, with just a few key officials aware of the matter. MTV3 says that the true extent of the hacking is still not clear. Neither is it certain that the problem has been fixed.