Niagara Regional Police have seized three firearms during a search of a home on Johnson Drive.
Officers began investigating the alleged unauthorized possession of firearms earlier this month.
A search warrant was executed Tuesday with help from the Emergency Task Unit, Tactical Support Group, Canine Unit and uniform officers.
Police say a silver revolver, sawed-off shotgun and .22 rifle were seized.
Four Niagara Falls residents, 32-year-old Malakai Dilks, 30-year-old Krystle Wallace, 33-year-old Jordan Wallace and 59-year-old Tracey Wintemute are facing multiple firearms charges.
(Written by Brandon Warby)