A 27-year-old woman has been arrested after a man was stabbed to death in south-west London.

The victim, believed to have been aged 34, was found injured in Lower Richmond Road, Mortlake, just before 10pm on Monday.

He was treated by paramedics and taken to hospital but died around half an hour later.

Police are working to tell his family.

The woman was arrested near the scene on suspicion of murder, the Metropolitan Police said.

She and the victim knew each other.

Superintendent Roger Arditti from the South West Command Unit, which covers Richmond, said: “I understand local residents will be shocked when they hear about this incident but I want to reassure them that a team of specially trained and experienced detectives are already working to establish the full circumstances.

“While an arrest has been made and detectives are already speaking to witnesses, I would urge anyone who was in the area around the time of the murder and who saw anything they think could assist the investigation to please get in touch.

“You will also see local officers in and around the area; they are there to help and any residents who have concerns should approach them and speak to them.”

Anyone with information can call police on 101 or tweet @MetCC quoting the reference CAD8000/18Jul, or to remain anonymous, contact Crimestoppers on 0800 555111 or online.