The Quebec Liberal Party confirmed in a statement on its website that the province’s anti-corruption unit visited its Montreal headquarters in July, in an under-the-radar operation.
The statement comes after Radio-Canada revealed the information about the secret search in a report Monday evening.
The report said the raid took place as all eyes were turned to the fatal train derailment in Lac-Megantic, and that only a small group of investigators took part in the raid.
The Liberals stated that Liberal employees offered their full co-operation during the UPAC investigation.
Liberal leader Philippe Couillard's press attaché Harold Fortin told CTV Montreal that he had no idea why the office was raided, and that police never offered an explanation.
Radio-Canada said it has filed a motion with the Quebec Superior Court to unseal documents related to the investigation. That request will be heard on Friday.
The Liberal Party said in its statement that “just as it does with the Chief Electoral Officer and the Commission Charbonneau, the PLQ will work with all authorities to monitor and investigate the effective implementation of the Election Act and other laws.”