KFMB-TV reports David Robert Moore III initially attracted the attention of undercover officers Friday night while they were conducting a sting targeting minors trying to buy alcohol at a shopping center.

When Moore opened the trunk of his white Honda Civic, two officers noticed what appeared to be military-grade weapons inside. They found nine guns, including a modified sniper rifle, a pistol and a rifle.

A military knife was also discovered. Moore was given a field sobriety test and arrested on suspicion of drunken driving. Police say he could also face charges for the weapons.

(Copyright 2012 The Associated Press. All rights reserved.)