A spokeswoman for Quebec's anti-corruption unit says Montreal Mayor Michael Applebaum has been arrested.
Anne-Frederick Laurence said Applebaum was arrested at his home early Monday. She gave no other details.
Anti-corruption officials raided city hall last February. They also targeted offices in various boroughs, including the one Applebaum represented for many years.
Applebaum took over as interim mayor of Montreal, Canada's second-largest city, last November after former mayor Gerald Tremblay resigned amid corruption allegations.
Gilles Vaillancourt, the former longtime mayor of neighboring Laval, was arrested in a sweep last month on corruption charges.
Toronto Mayor Rob Ford, who leads Canada's largest city, is facing unrelated allegations that appeared he on tape smoking crack cocaine. The video has not been released publicly.
