Police found camouflage clothes and ammunition in the Eastern Division on Thursday, they said in a release.
Near Sydney Trace San Pedro, Rio Claro, they came upon a camp. On searching it, they found 19 12-gauge shotgun cartridges with carbide, two pairs of camouflage pants, a camouflage bedspread and a piece of metal pipe about four feet long.
Police seized the contraband, but no one was seen at the campsite, so no arrests were made.
The exercise was supervised by PC Mohammed, and included the Eastern Division CID and the Eastern Division Task Force.
WPC Simmons is continuing inquiries.