Miss Hargreaves was shot and set alight in 2005
Police investigating the murder of a woman who was shot before being set alight say they had an encouraging response to a television appeal.
Lucy Hargreaves, 22, was murdered when three men broke into her home in Walton, Liverpool, in August 2005.
Police received about nine calls after a BBC Crimewatch appeal and are now conducting follow up interviews.
Detectives have also named a man, Kevin Thomas Parle, 28, who they want to speak to in connection with the murder.
He is also wanted in connection with the murder of 16-year-old Liam Kelly, who was shot in Dingle in 2004.
An appeal for information over the murder of Miss Hargreaves was shown on BBC One's Crimewatch on Tuesday night. A £10,000 reward is also on offer.
The calls taken mainly corroborated information held by officers but was "very encouraging", a Merseyside Police spokeswoman said.
Miss Hargreaves' aunt, Susan Cunningham, has said she wants justice for her niece's three children.
"I would like to be able to one day achieve some justice for them and be able to finish this story," she said.
Police want to speak to Kevin Parle in connection with two killings
"When they begin to ask questions about what happened to their mum, I would like to be able to say 'well yes, some people hurt your mum, but they are being punished for that'."
An investigation by Merseyside Police found Miss Hargreaves was killed in an act of revenge for her partner Gary Campbell's involvement in a fatal car crash in 1993.
They want to speak to Mr Parle who is white, 6ft 5in tall with a broad build.
He has blue eyes, cropped ginger hair and a scar on the left side of his head. He also uses the name Joseph Kenneth Parle.
Police believe he was in the Torrevieja area of the Costa Blanca in Spain in the autumn of 2005 and was planning to travel to the United States.
There are two European arrest warrants out for his arrest in relation to the two murders.