Three people were killed when a plant producing and packaging lighters exploded in Tu Son town, Bac Ninh province, on Thursday.
Witnesses said the explosion took place at around 1 p.m. at the 100-square-meter plant owned by Dinh Bang Export-Import Co. Ltd.
The blast allegedly set off a blaze which consumed everything inside the building.
Three workers: Nguyen Thi Nhung, 15, Nguyen Thi Ha, 16, and Nguyen Thi Phuong, 20, were killed on the spot.
A senior official from the Tu Son town police said they would ask for help from the Ministry of Public Security's Institute of Forensic Sciences and Fire Prevention and Fighting Department to identify the cause and the bodies of the badly burned victims.