About 600 officers from the Hong Kong Police Force’s Disaster Victim Identification Unit arrived at Wang Fuk Court in Tai Po around noon on Saturday to continue the search for those still listed as missing in the city’s deadliest fire on record.

They will try to gather evidence for the investigation into the blaze that devastated seven of the eight blocks in the residential complex. The officers, all dressed in white gowns and helmets, entered the buildings and got straight down to work.

FOLLOW LIVE UPDATES: Tai Po fire

The inferno, which broke out shortly before 3pm on Wednesday, was extinguished at about 10am on Friday after burning for 43 hours. It’s believed to have started in lower-floor mesh netting at Wang Cheong House and quickly spread to the other six other blocks in the estate which houses more than 4,500 people from about 2,000 families.

The confirmed death toll has reached 128 so far, including 89 bodies yet to be identified, with some 200 others still unaccounted for. Another 79 people were injured, including 12 firefighters.

An identification center has been set up to help families conduct preliminary identification of the deceased through photographs after which the police will arrange formal identification procedures.

ALSO READ: Citywide mourning starts as HK holds memorial for 128 Tai Po fire victims

The tragedy has sparked a wave of mourning in Hong Kong, Many residents have turned up at the estate, leaving bundles of flowers by the roadside in tribute to the victims.

The city has begun three days of mourning. Condolence points will be set up in all the 18 districts to enable the public to sign condolence books between 9am and 9pm from Saturday to Monday.