Prosecutors in Ho Chi Minh City have filed drug charges against an 82-year-old woman who they said was the leader of a large drug ring busted two years ago.
Police caught Nguyen Thi Miet at her house in District 10 in June 2014, when she was buying 3.3 kilograms of heroin from Ngo Van Thanh, 51.
They then searched her house and found 660 grams of heroin.
Based on her confession, police later arrested nine of her accomplices, who worked as her street dealers. They seized another 4.4 kilograms of heroin.
Investigators later discovered that in June alone, Miet's ring managed to sell 7.7 kilograms of heroin and earned a total of VND120 million, or nearly US$5,400. She reportedly bought drugs from a kingpin in the north.
The woman claimed she needed the money to raise her grandchildren.
Vietnam is tough on drug crimes and people involved in a case like this will likely face death sentences.