Quebec provincial police say they have raided the offices of an engineering firm as part of their investigation of the province's construction industry.

There have been no arrests.

Police say they visited the offices of Groupe-Conseil Roche in a Quebec City suburb.

The raids relate to accusations of influence-peddling and fraud.

Quebec announced last fall it was creating a special squad and launching Operation Hammer, a widespread investigation into allegations of corruption in the construction industry.

The province has also introduced new legislation to tighten the financing of political parties and the awarding of public contracts.