Toronto police have arrested a 46-year-old and seized a loaded semi-automatic pistol after a firearms investigation across the city.Police say officers from the Integrated Gun and Gang Task Force executed search warrants on Oct. 5 in several locations in the City of Toronto.As a result of those search warrants, investigators seized a loaded Canik 9mm firearm and arrested Marc Williams, 46, of Toronto.Williams was charged with:Possessing a loaded regulated firearmOccupying a motor vehicle with a firearmPossessing a prohibited device knowing no authorityUnauthorized possession of a firearmPossessing firearm with holding a licenseFailure to comply with release orderWilliams was scheduled to appear in court on Oct. 6.