The London Fire Brigade will investigate “fire safety issues” at a high rise residential and commercial block in east London that was engulfed by a huge blaze on Monday.
Forty fire engines and around 225 firefighters responded to the blaze in Freshwater Road, Dagenham, with the London Fire Brigade declaring a major incident.
More than 100 people were evacuated from the building and two people have been taken to hospital.
Authorities had been working to remove cladding from the tower block shortly before it was hit by the fire.
Vulcan, a leading company in architectural cladding systems, posted on Facebook last week that it was working to remove “non-compliant cladding” on the building.
London Fire Commissioner Andy Roe said: "The building has a number of fire safety issues known to London Fire Brigade. A full simultaneous evacuation of the building was immediately carried out and a significant search and rescue operation took place.
“I am pleased to confirm that everyone has been accounted for. More than 80 people were evacuated with firefighters leading residents out to safety and carrying out 20 rescues.”
Scaffolding surrounding the building was alight, as well parts of the ground to sixth floors and the roof, the LFB, who were called to the blaze at 2.44am on Monday, said.