According to the Tan Uyen district police, the arrested are Hang A Lau and Song Thi Di, both lives in Moc Chau district, neighbouring Son La province. The amount of heroin is also the largest one the Lai Chau police have ever confiscated.

The two confessed to the police that they had been transport the drug to Lao Cai province by a Lao man in exchange for VND150 million (US$6.73 million).The case was handed over to the Lai Chau police for further investigation.