The investigation team of the provincial police stopped two suspect vehicles in Viet Tri City on late November 26.At the investigation office, Vang A Cang, who was born in 1974 and resides in Moc Chau district, Son La province, confessed that he owned and transported the drugs for sale. He hired the three others to guard and transport the drugs.The cakes of heroin were wrapped in multiple nylon bags and hidden inside five plastic containers.The case is under investigation.