HONG KONG -- The death toll in a major fire that tore through a residential area in Hong Kong from Wednesday afternoon had risen to 65, said the Fire Services Department (FSD) on Thursday.

The FSD has dispatched a total of 304 fire engines and rescue vehicles, and used drones to monitor heat levels to prevent rekindling. The department has extinguished flames in four of the affected buildings and brought fire under control in the other three.

The residential area Wang Fuk Court consists of eight buildings, all of which were encased by green mesh and scaffolding due to a major renovation project. Three men responsible for the renovations were arrested earlier for suspected manslaughter, as the police investigation pointed to flammable materials covering the buildings as a possible cause for the rapid spread of fire.