New images and footage from inside the Grenfell Tower block have been released by the Metropolitan Police.
The material was captured by a specialist police recovery team that has been working closely with the London Ambulance Service and the London Fire Brigade as part of the ongoing operation.
58 people died or are missing and presumed dead, after the fire in North Kensington on Wednesday (June 14).
Police have said they believe the figure could yet rise further.
Commander Stuart Cundy, said: "It is really important that we are clear about the scale of the challenge facing us as our teams search Grenfell Tower to recover those people still inside and return them to their loved ones.
"Whilst our teams have been from the bottom to the top of the tower, we must now carry out a full forensic and systematic search.
"The conditions due to the fire damage verge on indescribable, which is why this will be such a lengthy operation taking weeks to complete.
"We must also prepare people for the terrible reality that some people may not be identified due to the intensity of the fire."
“Family liaison officers are supporting families, and that includes those people we know to be dead; some of those who are critically ill and sadly those people who we have been told were in Grenfell Tower that night who we have been unable to trace," said Commander Cundy.
“Work has been ongoing throughout the night and continues today, so we can get as good an understanding as possible about who we believe to be still missing.
"Sadly that work leads me to believe that the number of people missing, but as yet unaccounted for has risen from yesterday’s figure of 58.
“Today, police teams continue their support to families, and make enquiries to cross check the number of those missing.
"I have always said I will be accurate about what I know, so the next figure of those presumed dead and missing will be released tomorrow, Monday June 19.
"The figure will be higher but I do not wish to speculate on that number today.
“I must consider the fact that there may be others in the building who, for whatever reason have not been reported to us.
"There is also a real possibility that there may be people in the building that no one knows are missing."
"I want to hear from anyone who believes that they know someone who may have been living, staying or visiting but has not yet been reported missing to us," said Commander Cundy.
"We are not interested in your reasons for not telling us sooner, we just want to understand as best as we can who may still be inside the building."
Anyone who has concerns about someone who they know may have been living, visiting or staying in Grenfell Towers, but has not yet been contacted by the police or not yet reported their concerns about a possible missing person should call the police Casualty Bureau on 0800 0961 233.
The Casualty Bureau will be able to take all the relevant information from the caller to enable the police to further investigate if the reported person can be traced. If someone has been reported missing but has now been traced, call the Casualty Bureau to report them as found.
Commander Cundy added: "I'm really grateful to all those people who have provided us with material that could help our investigation. I'd urge anyone who has not yet provided us with material to please do so.
"Our investigation will be wide ranging and exhaustive - it will seek to find out if any crimes have been committed and if so make sure that we do all we can to bring any person responsible to justice.
"This will take us some time, but I give my commitment that if as part of that investigation we identify anything that gives cause for concern for the safety of the public we will inform the relevant authorities."
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