A 30-year-old woman has been arrested on suspicion of murder following a fatal stabbing in Enfield, north London.
It comes after a 66-year-old man was found critically injured in the communal area of a block of flats in Lockhart Close.
Police were called to the scene just after 7.20pm on Friday.
Despite the efforts of emergency services, he was pronounced dead at the scene.
The man has not been formally identified but officers believe they know who he is and his next of kin have been informed.
A spokesperson for the Metropolitan Police said the man died after receiving “stab injuries”.
They added: “A significant number of enquiries have been carried out over the weekend, including house-to-house checks and a forensic examination of the scene.”
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The woman was arrested on Sunday and is currently in custody at a north London police station, the force said.
Detective Chief Inspector Laura Nelson, who is leading the investigation, said: “Although an arrest has been made, it is vital that anyone with information about what happened on Friday evening comes forward to speak to us.
“I am also keen for anyone with a dashboard camera who was driving in Lockhart Close, Derby Road, Lincoln Road, or the surrounding area, to contact us immediately.”