A 42-year-old woman and a 45-year-old man have been arrested on suspicion of the murder of a Wisbech woman at her home on January 9/10.
The man is of no fixed address and the woman is from Wisbech.
Both are in custody at King’s Lynn.
A post mortem examination will take place tomorrow when formal identification will take place.
Detectives launched the murder investigation following the death of a 47-year-old woman in Wisbech.
Police were called by the ambulance service at 6.33am on January 10 after the woman’s body was discovered at her home in Beechwood Road.
Detective Inspector Lee Martin, from the Major Crime Unit, said: “We believe the woman was killed between 10pm on 9 January and 6am on 10 January.
“I would appeal to anyone with any information to get in touch with us as a matter of urgency.
“I understand this is likely to be concerning to local people, but we do believe it to be an isolated incident.”
Extra police patrols were diverted to the area this week “for people to speak to if they wish”.
Anyone with information should report online here or via the web chat service and quote Operation Aerospace.
Those without internet access should call 101.