Customs and Border Protection officers credit a drug-sniffing dog for the seizure of almost a quarter of a pound of fentanyl at the Arizona-Mexico border this week. Justin Winburn of Customs and Border Protection says a young woman was stopped at the San Luis Port of Entry, and a narcotics canine found a package of fentanyl pills taped around her midsection. He says a short time later, an 18-year-old was stopped. Both women, who are U.S. citizens, were arrested.