CUTLER, Ind. -- A postal worker who had been a soldier was arrested after conservation officers found bomb-making materials, guns, marijuana and other illegally possessed items on his rural Carroll County property, authorities said.

Jessie Snider, 27, was arrested Saturday night after a Department of Natural Resources conservation officer heard a gunshot come from Snider's property, the DNR said.

A search of Snider's home and barn revealed 25 guns, more than 5,900 rounds of ammunition, an indoor marijuana growing operation and materials for building bombs, including a can of the explosive C-4, the DNR said Wednesday.

"Mr. Snider stepped over the line of being an avid gun collector when he allegedly began manufacturing various bombs and explosive devices," said 1st Sgt. Dan Dulin, a DNR conservation officer.

Nine people were on the property when officers arrived, but only Snider and Justin Erdie, 28, were arrested, authorities said. Snider was held on felony gun and drug charges, and Erdie was arrested on drug charges.

Dulin said Snider had many items that investigators believe were taken unlawfully from the U.S. military, "including a thermal sight imager designed for a TOW missile and various pieces of body armor."

Snider, a postal worker in Lafayette, is a U.S. Army veteran.

Dulin said officers also found in the home "numerous pieces of anti-government propaganda representing his (Snider's) belief that the (Sept. 11, 2001, terrorist) attacks were organized by the United States government."

Information on whether investigators have suspicions as to what anyone intended to do with the weaponry and bomb-making materials wasn't available.

The officer who heard the gunshot was investigating complaints of poaching at the time, the DNR said. Information on whether anyone in particular was accused of poaching wasn't available.