Detectives launched a murder inquiry today after a 60-year-old woman was found stabbed to death in her home.
Officers discovered the body after they were called to a flat in Camberwell, south east London.
They believe the victim, who has not been formally identified, knew her attacker.
A Metropolitan Police spokesman said no arrests have been made.
He said: "Detectives are investigating the murder of a 60-year-old woman found stabbed at her south London home.
"Police were called at around 6.30pm on Sunday to attend a flat in Kenbury Gardens, Camberwell, where they discovered the woman's body.
"She was pronounced dead at the scene. A post-mortem is due to be held at Greenwich Mortuary.
"The woman has not been formally identified and officers are in the process of ensuring all next of kin are aware."
Detective Chief Inspector Will O'Reilly, of Homicide and Serious Crime Command, is leading the investigation.
Any witnesses should call the incident room on 020 8721 4905 or Crimestoppers on 0800 555 111.