Police hunting the killer of a pensioner battered to death in her own home have urged the public to report any friend, family or colleague who may have been acting suspiciously since her death.
They are missing the "key" information which could unlock the case and need to speak to anyone who might have the slightest suspicion of someone close to them.
Judith Richardson, of Hexham, Northumberland, was bludgeoned to death in what police described as "a brutal attack on an innocent elderly lady".
Officers discovered the 77-year-old's body in the hallway of her stone-built terraced home in St Wilfrid's Road on Friday, after her stolen handbag and some of its contents were found stuffed into a litter bin in Newcastle city centre, 25 miles away.
Police have released pictures of the bag in the hope it will lead to new witnesses coming forward.
Detective Chief Inspector Paul Young, who is leading the investigation, said: "There has been a good response so far from members of the public but I am still waiting for that key piece of information. Whoever has done this will have changed their behaviour since they committed this offence.
"Somebody who has witnessed something in the area, somebody who could give us a name, somebody who has concerns about a change in somebody's behaviour.
"I am appealing for people to come forward, anonymously if they so wish. If you have the slightest bit of suspicion about anybody you know, work with, members of your family, contact us."
A man and a woman, both pensioners, were arrested on Monday in connection with the murder.
Annie Snaith, 78, a charity shop worker, and Edward Brewis, 84, both of Hexham, have been released on police bail pending further inquiries.