The cladding at Grenfell Tower is thought to have contributed significantly to the speed and intensity with which the blaze spread through the building on June 14 and killed around 80 people.
The Independent revealed on Thursday (October 19) that Kensington and Chelsea Borough Council (RBKC) is being pressured by the police not to release documents containing cladding safety concerns voiced before the fire.
The Met has advised RBKC to block Freedom of Information requests trying to shed light on what action was taken to mitigate fire risks at Grenfell Tower.
The council, in its last response, said it had been advised by police not to release the information amid fears it could interfere with the criminal investigation, reports the Independent.
A Met spokesman told getwestlondon: "We are carrying out an ongoing criminal investigation into the cause and spread of the fatal fire at Grenfell Tower on June 14.
"This investigation is one of the most complex carried out by the MPS, outside of terrorism and we are committed to finding answers for all those so deeply affected by the tragedy.
"We will consider taking every possible legal step to prevent this investigation from being prejudiced. As such we are made aware of and consulted on if release of material under the Freedom of Information Act, at this stage, may prejudice this ongoing investigation."
He added: "The Act allows for such consultation to take place, and there are relevant exemptions for non-release of material that may prejudice, at this stage, an ongoing criminal investigation.
"The release of material remains the decision of the organisation who holds it."
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