An Indiana man was charged Tuesday with three felony weapons violations after authorities say they found three assault rifles and explosive chemicals in his car before a major Los Angeles gay pride parade.

James Wesley Howell, 20, made his first appearance in Los Angeles County Superior Court, where a lawyer entered not guilty pleas on his behalf to charges of possessing an assault weapon, possessing a destructive device on a public street, and importing or manufacturing a large magazine.

He also was charged with a misdemeanor count of possessing a loaded firearm in a vehicle.