07/02/2015 08:49 EDT | Updated 07/02/2016 05:59 EDT

UPAC raiding engineering firm in Quebec City

Quebec's anti-corruption unit is raiding a major engineering firm in Quebec City this morning.

About 25 UPAC officers showed up at the offices at around 7 a.m. Thursday.

Not many details are being released, but investigators are said to be looking for documents in connection with an ongoing case.

No arrests are expected.