An elderly man has been stabbed to death in Camden.
The victim, believed to be in his 60s, was found dead at a sheltered home in Belsize Park.
Officers were called to the scene at about 10:35am yesterday.
An elderly woman was arrested, but later released without charge.
Detective Chief Inspector Andy Chalmers said: "At this very early stage in our investigation we have an open mind about what may taken place, there is no clear motive and my team will not jump to conclusions.”
Police believe they know the identity of the victim but the next of kin has not yet been informed.