Da Nang police officers have temporarily seized a large number of metal cylinders containing nitrous oxide (N2O), known as laughing gas, without papers and invoices that prove their origin.

The metal cylinders containing laughing gas are seized by Da Nang police. Photo: L.H

Previously, at 10:00 p.m. on Monday, through a surprise patrol along a bypass to the south of the Hai Van road tunnel in Hoa Vang District, officers from the Hoa Nhon gate traffic police station discovered two cargo delivery trucks carrying 80 metal cylinders, all of which contain laughing gas.

Through the initial investigations, the drivers of the trucks admitted that these laughing gas containing cylinders were transported from other Vietnamese localities into Da Nang for supply to entertainment venues such as discos, bars and karaoke across this central city.

According to scientists, nitrous oxide creates an instant refreshing feeling, dizziness and blocks the nervous system, reducing the ability to think, distorting sound and even causing visual hallucinations.

A person exposed to nitrous oxide in a closed room or inhaling it directly would suffer from a lack of oxygen in their bloodstream. For a normal person, inhaling the laughing gas regularly could affect their nervous system.

The case is still under investigation.

Reporting by LE HUNG – Translating by A. THU