Court documents show a federal raid of a hunting lodge in the Flint Hills capped a months-long investigation that included the use of undercover hunters, GPS tracking of vehicles and camera surveillance.

Federal agents executed the search warrant on Jan. 26 on Eagle Head Outfitters Lodge in Grenola. Court documents filed Friday in U.S. District Court in Kansas show authorities seized cameras, phones, photos, firearms, ledgers, waterfowl and other items.

Its owner, Josh Hedges, did not respond to telephone and email messages seeking comment.

The U.S. attorney’s office said Monday that no charges have been filed.

Prosecutors typically don’t make charging decisions until months after searches.

An affidavit shows agents are investigating allegations that include hunting out of season, killing more game than allowed, and illegally baiting fields with feed.