The paths between the boxes span only around 30 m2 within an enclosed space, harboring fire risks.
Huynh Ngoc Quan, deputy chief of the HCMC firefighting police department, said the sleep boxes are a new rental model for use as low-cost bedrooms, however, such houses have violated fire safety regulations.
Quan said stairs at the above location connect the basement to the other floors, so smoke from a fire at any level would spread very quickly. The narrow paths would also make it more difficult for people to escape, he added.
Following a fire that killed 56 people at a Hanoi mini apartment building in Thanh Xuan District last month, the police have been performing checks at houses and apartments for rent throughout the country.
HCMC does not currently have exact statistics regarding the number of sleep box homes due to it being a new model.