WAREHAM — Massachusetts State Police have arrested two men and charged them with trafficking heroin following a motor vehicle stop.

Police say they observed a Honda CR-V with an expired inspection sticker at a stop sign. After noticing the sticker, police pulled over the vehicle, which was operated by Jaqua Smith, 24, of Onset and occupied by Shawn Panepinto, 22, of New Bedford.

According to the Massachusetts State Police, after a search of the vehicle, they located a backpack that contained 400 grams of heroin.

Both Smith and Panepinto were arrested and charged with trafficking in heroin/ morphine/ opium. Bail was set at $250,000 for each of them. Both men will be arraigned Tuesday in Wareham District Court.