Detectives investigating the murder of Lucy McHugh in Southampton are appealing for sightings of a man seen on a bike on Wednesday 25th July.
That was the day before the 13 year old's body was found in woodland by the Sports Centre.
Hampshire Police have also confirmed they're searching an area of Tanner's Brook, in connection with what they've called a 'clear line of enquiry'.
They're also asking anyone who saw a man riding a dark mountain bike from the Sports Centre along Coxford Road or close to the new search scene to come forward.
The man is described as wearing a dark jacket and blue jeans.
Previously members of the public carried out their own searches at the Sports Centre, but Police say this will not be possible due to the nature of the terrain.
Officers are asking the public therefore to help the investigation by not coming to the area. The northernmost part of Tanner’s Brook will remain open for local residents.
Detective Superintendent Paul Barton said:
“We have reason to believe that the murder weapon - a knife, scissors or other sharp implement - was discarded in this area and we are focusing our searches there.
“As part of our investigation, we are also looking to identify a man we believe cycled from the Sports Centre to this location that morning.
“We are hoping that this new information jogs someone’s memory.
“If you saw this man, please get in touch and help us find Lucy’s killer.”
Anyone with information should call 101 quoting Operation Refund.
A 24-year-old man from Southampton arrested on suspicion of murder and sexual activity with a child, and was subsequently technically bailed in relation to those offences, with conditions not to enter the Southampton area.
His bail has now been extended until Saturday 27th October.
The same man was charged with an offence which relates to failing to disclose a password to his Facebook account to detectives investigating Lucy murder.
He was remanded in custody until Friday 31st August.