The largest case of illegal price fixing in Switzerland’s construction industry has prompted further investigations.
The director of Graubünden’s cantonal justice, security and health department, Christian Rathgeb, confirmed that a complaint has been filed against a person unknown over the harsh treatment of a whistleblower by policemen last year.
Rathgeb said it was crucial to investigate the accusations by an independent expert.
The whistleblower had reported a price fixing scam to the Graubünden cantonal authorities and detained before being brought to psychiatric clinic.
Last month, the Swiss competition watchdog handed down a record CHF7.5 million ($7.5 million) against several private construction companies.
The verdict is still subject to appeal.
Last week, the control committee of the Graubünden parliament decided to open an investigation into the price fixing scam.
The case allegedly involves businessmen as well as the head of the police force and comes ahead of parliamentary and government elections in Graubünden in June.
swissinfo.ch with SDA-ATS; urs