A woman has been arrested on suspicion of murder after a 29-year-old man was stabbed to death in south London.
Police and paramedics were called to a house in Clyde Road, Croydon, at around 7.40am on Sunday.
The London Air Ambulance also attended in a bid to save the victim's life but he was pronounced dead at the scene.
A 35-year-old woman was arrested on suspicion of murder and taken into custody.
The Metropolitan Police said a murder investigation had been launched by homicide detectives from the Specialist Crime Command.
Police have cordoned off the address for examination of the crime scene.
The victim's next of kin have been informed of his death but he has not yet been formally identified.
It comes a week after police launched an investigation into the murder of a 59-year-old man in a flat in nearby Coulsdon.
Anyone with information is asked to call police on 101 or to contact Crimestoppers anonymously on 0800 555 111.