Police have arrested a 78-year-old man on suspicion of murder after a man was stabbed during a suspected burglary and later died.
Police attended a house in Hither Green, southeast London, at 12.45am to reports of a break-in in progress.
Police received reports that two men were inside the 78-year-old mans home.
The pensioner was forced into the kitchen by one of the men armed with a screwdriver while the other went upstairs.
During the struggle a 37-year-old man was found inside the property sustained a stab injury to his upper body.
He was discovered collapsed nearby and taken to hospital but died soon after 3.30am.
Police initially arrested the 78-year-old on suspicion of grievous bodily harm but they have since rearrested him on suspicion of murder.
A Met Police statement said: “The homeowner suffered bruising to his arms. His injuries are not life threatening.
“He was taken to a south London police station where he remains at this time.
“The second suspect in the burglary fled the scene prior to police arrival and remains outstanding.
“The Met’s Homicide and Major Crime Command investigate. Enquires are ongoing.”
The dead man’s next of kin have been informed but formal identification is yet to take place.
A post mortem examination is expected to take place in the next few days.
Police have appealed for anyone with information to get in touch.