Tower blocks are created to withstand fires by containing them in the single flat where they first occur - but this didn't happen at Grenfell, where the blaze ripped up the side of the building.
Scotland Yard have also announced that residents Ya-Haddy Sisi Saye, also known as Khadija Saye, 24, Abufars Ibrahim, 39, and Anthony Disson, 65, are among the victims.
"I believe there are 79 people that are either dead, or missing, and sadly I have to presume are dead", Metropolitan Police Commander Stuart Cundy told reporters.
He then said that five of the dead have been identified but that it will be a slow and painstaking task to identify the others.
"The scale of this investigation is truly significant and we are looking at all criminal offences that may have been committed and from day one have worked closely with London Fire Brigade, the Health and Safety Executive and a wide range of specialists", he said.
"We miss him terribly, and are pulling together as a family and trying to stay strong under these tragic circumstances".
The Someone Like You hitmaker paid them a visit to pay her respects, and have a "cup of tea and a cuddle".
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Kasowitz heads the group despite his lack of deep experience in Washington or in criminal defense. That lack of formal notification wouldn't be unusual in the early stages of an investigation.
A minute's silence was held across the country for the victims yesterday.
Footage from inside the gutted building has been released, showing the extent of the damage caused by the blaze.
"I was in there myself and went all the way to the top floor and it is incredibly hard", he said, before pausing as tears welled up in his eyes.
An emotional Prince William described the tragedy as "one of the most bad things (he's) ever seen". At the time, William said it was "one of the most awful things I have ever seen", and the Queen said that the country should be "resolute in the face of adversity" in the wake of the tragedy.
The building's residents, most of whom are poor or have low incomes, had warned for many years that the building posed a fire hazard.
Pictures of the visit by the Hello singer, who was born in Tottenham, north London, were shared on social media and showed her looking emotional as she offered support.