LOUISVILLE, Ky. (WDRB) -- Indiana State Police say a routine traffic stop yielded 12 pounds of marijuana Thursday night.

According to a news release, it happened just before 6 p.m. on U.S. Highway 31, near Eastern Boulevard, in Clark County, Indiana.

Police say a trooper stopped 38-year-old Daren Ngo, who was driving a 2015 Toyota Sienna, on the highway. During the traffic stop, police say "reasonable suspicion was developed that criminal activity was afoot."

That's when, police say, they called an Indiana State Police K-9, named "Riggs," into action. According to the news release, Riggs "showed interest" in the car, prompting police to search it.

Police say that search revealed 13 pounds of marijuana, which was vacuum sealed in plastic bags hidden in cardboard beer boxes in the back of the vehicle. The estimated value of the marijuana is over $13,000, according to police.

Ngo was arrested and charged with Dealing in Marijuana over 10 Pounds, Possession of Marijuana over 10 Pounds, and Maintaining a Common Nuisance. He was taken to the Clark County Jail.

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