Investigations are continuing into the death of a woman who was crushed by a falling window frame in Mayfair.
The victim, believed to be in her 20s, was hit by the concrete in Hanover Square yesterday morning.
She hasn't yet been named.
The Health and Safety Executive is carrying out the inquiry.
The Health and Safety executive has begun an initial investigation into the death of woman killed by a building debris in central London.
It's thought the woman, in her 20's, may have been killed by a wooden window frame which fell on her.
A woman has died after being hit by debris falling from a building.
The woman, believed to be in her 20s, was pronounced dead at the scene after building work fell on her in Hanover Square in Mayfair, central London, the London Ambulance Service (LAS) said.
An air ambulance was sent and extensive efforts were made to resuscitate the woman to no avail.
An LAS spokeswoman said: "We were called at 11.30am today to reports of building work fallen on a person at Hanover Square.
"Extensive efforts were made to resuscitate a woman, but sadly she was pronounced dead at the scene by the air ambulance doctor."
Police also attended the scene.
A Scotland Yard spokeswoman said: "At this stage it is believed an unknown object hit the woman."