Five cars, 819 N₂O cylinders, 19,000 balloon shells, and various related items and documents involved in the case are seized. VNA/VNS Photo

QUẢNG NINH – Police in the northern province of Quảng Ninh has recently dismantled a large-scale ring involved in the illegal trade and transport of nitrous oxide (N₂O), commonly known as laughing gas, said the Drug Crime Investigation Police Division under the provincial Department of Public Security.

At around 10.30pm on November 3, multiple task forces were deployed simultaneously across the wards of Hồng Gai, Cao Xanh, and Việt Hưng. The operation led to the detention and questioning of eight suspects, along with the seizure of five cars, 819 N₂O cylinders, 19,000 balloon shells, and various related items and documents.

Initial investigation revealed that the suspects had purchased 800 N₂O cylinders from a supplier in the Móng Cái area of Quảng Ninh at a price of VNĐ800,000 (over US$30) per cylinder, intending to transport them to Hanoi for resale and profit.

Authorities are continuing the investigation to bring all individuals involved to justice in accordance with law.

Earlier, the Quảng Ninh Border Guard force also intercepted another large-scale operation smuggling and trading laughing gas, seizing 637 cylinders and four cars. VNA/VNS