Detectives investigating the deaths of two men in Ilford, east London, have arrested a man on suspicion of two counts of murder.
A murder probe was launched on Sunday after police were called to a residential address in Tavistock Gardens at 4.24am to reports of a disturbance.
Officers attended with paramedics from the London Ambulance Service and two men, aged 43 and 45, were found with stab injuries.
The Metropolitan Police said a 51-year-old man was arrested at an address in Hackney shortly after 4am on Monday and has been taken into custody.
A 28-year-old woman was also found injured at the scene, and was arrested on suspicion of murder when officers used a Taser.
Police launched a murder investigation after officers were called to reports of a disturbance at a property in Ilford shortly before 4.30am.
Paramedics from London Ambulance Service fought to save the two men, but they were pronounced dead at the scene.
A police cordon remains in place at the scene today guarded by officers.
Detectives believe they know the identity of the two victims and are still working to inform their next of kin.
The 28-year-old woman was treated in hospital before being taken into police custody. She was subsequently released under investigation.
Detectives are trying to piece together the full circumstances, including how the parties were known to each other.
DCI Perry Benton, said: “We are keen to hear from anyone who was in the Tavistock Gardens area in the early hours of Sunday, 10 January, who hasn’t already spoken to police.
“We have made two arrests as part of a fast-paced investigation that is piecing together the circumstances of how the two men died.”
He added: “We need to hear from anybody who knew these men or anything about the sequence of events that led to their untimely deaths.”