A routine traffic stop resulted in the seizure of what authorities say was nearly $10,000 worth of crystal meth on its way to Phoenix late last week.

Two people, 36-year-old Enrique Orozco and 27-year-old Vanessa Concepcion Gaxiola, were driving in a 2003 Chevrolet pickup truck west on Interstate 10 when a DPS K-9 unit pulled them over near Marana.

The two said they were driving to Phoenix, but DPS officials tell New Times the couple was acting suspiciously, which prompted the officer to ask if he could search the vehicle.

When the two said no, the officer had a narcotics canine walk around the truck.

When the dog indicated there were drugs in the car, the couple's objection to a search was noted and ignored.

Officers found an open half-full potato chip bag on the back seat of the truck and as you may have guessed, it was full of crystal meth.

"There are some smart criminals, but they aren't all rocket scientists," a DPS official says. "Our dogs are very accurate."

The officer found close to a half pound of meth.

Orozco and Gaxiola were arrested and booked into the Pima County Jail on charges of possession and transportation of dangerous drugs.

• Crime