An 18-year-old woman has died after falling from the 17th floor of a tower block as police raided a flat in south-east London.
She fell from her bedroom window before officers arrested a man at the flat in Mulgrave Road, Woolwich at around 9:30am.
The woman was pronounced dead at the scene. The man was arrested on suspicion of assisting an offender.
Police have refused to give further details of the incident and it is not known if the woman, who has not been named, was the target of the arrest warrant.
The incident has been referred to the police watchdog the he Independent Police Complaints Commission (IPCC). The Metropolitan Police Service (MPS) Directorate of Professional Standards (DPS) is also investigating.
Police said they were waiting for a formal identification of the woman before releasing her name.
The Met said the man arrested was in custody at a south London police station.