Police investigating the murder of Bristol teenager Kylee Dibble have said they had a "good response" to a BBC Crimewatch appeal.
Kylee Dibble was killed at her Barton Hill home in February
Detectives hunting her killer appeared with her mother on the BBC programme on Thursday night.
The programme took more than 20 calls and said six people named a man who is wanted by the police for questioning.
Kylee, who was 18, was found dead in her burnt-out flat in Barton Hill at the end of February.
Police also released a new image of the man wanted for questioning.
He was seen walking from Corbett House, where Kylee lived, across the area of grass that leads to Longlands House on the morning of 28 February.
The man was seen near Kylee's flat on the morning of her death
He is in his 20s, of mixed race, with plaited shoulder-length hair. He wore a black zip-up jacket and dark, flared jeans.
Det Supt Stephen Tunks said: "We believe that Kylee was murdered between 7.45am and 8.30am that morning. He was seen walking across the grass at about that time, so we really need to speak to him."
Speaking on Crimewatch, Kylee's mother Lesley Woodhouse said: "I need to know what happened to my daughter. I need to know what she did that was so wrong for her to deserve this.
"She has left behind two brothers and two sisters and they are really, really missing their sister terribly."
A £15,000 reward has been offered by the Safer Bristol Partnership and Crimestoppers for information leading to the arrest and conviction of the offender.