LONDON — Seventy-nine people are dead or missing and presumed dead following a devastating blaze in a London high-rise building last week, police said on Monday, as Britain held a minute’s silence for the victims.

“As of this morning, I’m afraid to say there are now 79 people that we believe are either dead or missing and I sadly have to presume are dead,” police commander Stuart Cundy told reporters.

Police had earlier put the toll at 58 presumed dead.

He said only five people had been formally identified so far by police, after officers earlier warned that some may never be identified due to the condition of the remains.

Members of London's emergency services observe a minutes' silence in memory of the victims of the June 14 fire at the Grenfell Tower block, pictured on the horizon, in Kensington, west London, on June 19, 2017. (AFP PHOTO / NIKLAS HALLE'N)

Members of London’s emergency services observe a minutes’ silence in memory of the victims of the June 14 fire at the Grenfell Tower block, pictured on the horizon, in Kensington, west London, on June 19, 2017. (AFP PHOTO / NIKLAS HALLE’N)

Cundy said the search and recovery operation was ongoing in the burnt-out 24-story tower.

“This is an incredible distressing time for families and they have my commitment that we will do this as quickly as we possibly can,” he said.

Police man a security cordon as a huge fire engulfs the Grenfell Tower in West London, June 14, 2017. (AFP Photo/Daniel Leal-Olivas)

Police man a security cordon as a huge fire engulfs the Grenfell Tower in West London, June 14, 2017. (AFP Photo/Daniel Leal-Olivas)

Cundy promised an “exhaustive” criminal investigation into the fire that would also look at a major refurbishment of the building completed last year.

“We will go where the evidence may take us,” and do everything possible “to ensure that those responsible will be brought to justice,” he said.

Members of London's emergency services observe a minutes' silence in memory of the victims of the June 14 fire at the Grenfell Tower block, pictured on the horizon, in Kensington, west London, on June 19, 2017. (NIKLAS HALLE'N / AFP)

Members of London’s emergency services observe a minutes’ silence in memory of the victims of the June 14 fire at the Grenfell Tower block, pictured on the horizon, in Kensington, west London, on June 19, 2017. (NIKLAS HALLE’N / AFP)

“If I identify… an issue that is a risk to public safety, we will be sharing that immediately with the relevant authorities,” he added.

Cundy warned that the toll of 79 people could change.

“I believe there may be people who were in Grenfell Tower that people may not know were missing and may not have realized they were in there on the night.

“Equally, there may be people who thankfully may have managed to escape the fire and for whatever reason have not let their family or friends or police know,” he said.