Four people have been stabbed to death at a home in south-east London.
The victims, three women and a man, were all pronounced dead at the scene in Delaford Road, Bermondsey, in the early hours of Monday.
Pictures from the scene showed part of the road closed off with metal hoarding, and a number of forensic tents had been put up.
Police said a man has been arrested on suspicion of murder and remains in custody.
All five people are believed to have known each other.
Emergency services were called at around 1.40am to reports of a disturbance, and when police forced entry to the home they found four people with fatal stab injuries.
They are still in the process of contacting the victims’ families.
A Met Police spokesperson said: "Detectives are investigating the deaths of four people in Southwark.
"A man has been arrested.
"Police were called at about 01:40hrs on Monday, 25 April to reports of a disturbance at a residential address on Delaford Road, SE16.
"Officers attended and forced entry.
"Inside, they found four people suffering what are believed to be stab injuries.
"Despite the efforts of emergency services, all four people – three women and a man - were pronounced dead at the scene.
"Officers are in the process of contacting next of kin.
"Post-mortem examinations will be arranged in due course.
"A man has been arrested on suspicion of murder and taken to a south London police station where he remains in custody.
"Detectives from Specialist Crime are investigating.
"It is thought that all five people were known to each other.
"Enquiries continue to establish the circumstances."
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