Una Crown's Wisbech murder: £10,000 reward offered
A reward of up to £10,000 has been offered for information about the murder of an 86-year-old woman.
The body of Una Crown was found at her home in Magazine Lane, Wisbech, on 13 January. She had been stabbed to death and set on fire.
The Crimestoppers reward is offered for information leading to the arrest and conviction of her killer.
A knife found last week in a street nearby is still being examined.
Mrs Crown was last seen on 11 January, but spoke to a friend on the telephone at about 17:00 GMT the following day.
Her body was found at 10:45 GMT on 13 January.
A post-mortem examination showed she had been stabbed in the neck and chest. Police believe Mrs Crown, a widow, was then set alight in an attempt to destroy evidence.
Det Ch Insp Jon Hutchinson, said: "I hope this reward will motivate someone to come forward with that crucial piece of evidence that will lead us to Mrs Crown's killer.
"This was a horrific murder of an elderly woman in her own home.
"Someone out there knows what happened on the night she was killed and I would urge them to do the right thing and call police or the charity Crimestoppers."
At the weekend, officers carried out a "memory-jogging" exercise, stopping pedestrians, motorists and cyclists in Magazine Lane.
They said they were "encouraged" by the public's response and were following "a number of leads".
Meanwhile, Fenland District Council said it would not be emptying dustbins in a number of streets near the crime scene until police had completed door-to-door enquiries in the area.