Thai Nguyen police arrested two local men on Friday smuggling about 33 kilograms of heroin, the largest drug amount being seized in the northern province.
Nguyen Van Khoa, 41, and Ngo Van Thanh, 40, were stopped on a road in the province’s Phu Luong District when they were smuggling the drug on a car with Hanoi license plate.
Police seized the heroin, which was divided into 100 packs, and 179 methamphetamine tablets.
The duo confessed they bought the drug from a person in Hoa Binh Province and was on the way to Cao Bang Province to resell it.
On the same day, deputy minister of Public Security Le Quy Vuong praised the provincial police and decided to award the agency for the successful mission.
Earlier on Thursday, police in Nghe An Province arrested three people for smuggling more than seven kilograms of heroin from Laos into Vietnam.
The arrestees include Nguyen Quoc Khanh, who is suspected to organize the smuggling of heroin from Laos to northern Vietnamese provinces.
Vietnam has some of the world's toughest drug laws. Those convicted of smuggling more than 600 grams of heroin or more than 2.5 kilograms of methamphetamine face the death penalty.
The production or sale of 100 grams of heroin or 300 grams of other illegal narcotics is also punishable by death.