The body of an elderly woman who was killed when a 20-metre long crane collapsed on top of a block of flats is still trapped in the rubble.
The woman, who is believed to be in her 80s, died at the scene on Wednesday afternoon.
Specialist firefighters will attempt to recover the woman's body from the severely damaged building on Thursday.
Four other people were injured. Of those, two were rushed to hospital with head injuries and the others were treated on the street by the London Ambulance Service (LAS).
A construction worker remains in a critical condition in hospital. The investigation into the cause of the collapse is in its "very early stages" and there have been no arrests, said police.
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Neighbours said they heard a loud boom and what sounded like an "earthquake" when the crane collapsed just before 2.40pm on Wednesday.
Victoria Wigzell told Mirror Online she had spoken to the elderly woman and her family in the past.
She said: "I don't actually know them but they were nice people."
A spokesperson for Metropolitan Police said: "A multi-agency investigation is ongoing following the collapse of a crane into a residential property and building site in Bow, E3.
"Police were called at approximately 2.39pm on Wednesday, 8 July, to Gale Street, E3.
"Officers attended with LAS and LFB.
"One woman inside a residential address, believed to be aged in her 80s, died at the scene.
"Specialist firefighters will be working today to safely recover her body.
"Her next of kin have been informed. Formal identification awaits and a post-mortem examination will be scheduled in due course.
"A construction worker was also injured and remains in hospital in critical condition.
"A number of other people are believed to have suffered non life-threatening injuries.
"A joint investigation is underway involving officers from the Met’s Central East Command Unit and Specialist Crime, the Health and Safety Executive, and the London Fire Brigade. The Local Authority are aware and providing support.
"A scene is expected to remain in place for the next few days.
"The investigation is in its very early stages. There have been no arrests and enquiries continue."