DOVER, Del. (AP) — Police say they've charged four men and seized more than 50 guns as part of illegal hunting investigation.

Division of Fish & Wildlife Natural Resources Police Cpl. John McDerby says the probe of hunting by people prohibited from possessing deadly weapons was sparked by anonymous tips months ago.

McDerby says more than 250 pounds of venison, seven crossbows and many deer racks and mounts also were seized in the investigation focused in New Castle County.

Police say 53-year-old Michael Dewey and 24-year-old Christopher Griffin of Wilmington, 53-year-old Jeffrey Callahan of Newark and 50-year-old Gary Grose of Townsend have been charged with possession of a firearm by a prohibited person. Each faces a variety of other charges.

McDerby says he can't release further details because the investigation is continuing.