LAVAL, Que. -- Quebec's anti-corruption squad is back in action this morning in Laval, where investigators are conducting a number of searches.

The raids appear to target engineering firms and authorities say no arrests are expected.

They say about 90 police officers have been deployed in the municipality, the third-largest in Quebec.

The move follows a series of recent raids on offices, city hall and Mayor Gilles Vaillancourt's home.

Vaillancourt has been accused, over the years, of offering provincial politicians cash bribes, but has angrily denied those accusations.

The embattled mayor has been on leave for unspecified medical reasons and says he is still reflecting on his political future.