Dao An Cuong and 10 accomplices were involved in transporting and selling nearly 1,000 N2O gas canisters from the Quang Ninh border region to Nghe An and Bac Ninh.
A dispute over a damaged LED screen in a karaoke room led to a Korean restaurant owner being beaten to death with a laughing gas cylinder by friends of a group of fellow Korean customers.
The Ministry of Public Security proposes adding acts of producing and trading N2O laughing gas to the Penal Code's offenses, with penalties ranging from a minimum fine of 200 million dong to a maximum of 15 years in prison.
