A fresh appeal to help find the killer of a prostitute who was stabbed to death in Sheffield five years ago has produced new information, police say.
The fresh appeal was launched on the fifth anniversary of the murder
Michaela Hague, 25, was stabbed 19 times and dumped on wasteland at Spitalfields, near the city centre, on Bonfire Night 2001.
Ch Supt Paul Broadbent said he was "encouraged" by responses to an appeal on the fifth anniversary of her death.
He said officers had received a number of calls and further information.
He said: "This is a good response some five years on from the incident.
"It shows that people are still interested and concerned about the investigation and it's pleasing that we have some fresh information to work on."
Police said they were now "sifting through" the new details in a bid to trace Michaela's killer.
Ms Hague was found in Spitalfields after being stabbed in the neck and back at least nine times.
She managed to give a description of her attacker as she lay dying in the arms of a police officer.
She said her attacker was white and clean shaven with fair hair.
He was wearing a wedding ring and drove a blue Ford Sierra car with a roof rack.
Despite extensive inquiries her killer has not been found. Police hope advances in DNA technology will lead to her killer being caught.