Officers searching a golf course where the body of a baby was found discovered a toy doll, police have said.
Detectives from Merseyside Police are continuing to appeal for information after the baby boy's body was found by two dog walkers in a wooded area of Brackenwood golf course in Bebington, Wirral, on January 29.
A force spokesman said following an extensive search of the golf course officers found a toy baby doll, which had some grey tape wrapped around it, alongside a plastic protein shake or water bottle with a red top in the wooded area around the course.
Detective Chief Inspector Judith Blease said: "Investigations of this kind always take time and I would like to thank the people living nearby the golf course for their patience while we have carried out our inquiries.
"Officers carried out a painstaking and lengthy search of the golf course and surrounding area to establish if there was anything further to assist the investigation.
"It is not clear if the doll or the bottle is anyway connected with this case but we would ask anyone who thinks they saw either item or has any idea how they ended up there to contact us so that we can eliminate them."
Forensic tests are being carried out to establish the cause of death of the baby, who police believe may have been there for some weeks before he was found.
Detectives have also made inquiries into recent births on the Wirral, which will be extended to the wider Merseyside area and neighbouring forces, the police spokesman said.
Ms Blease added: "We are continuing to work closely with our partners to follow a number of potential lines of inquiry as we all know how important it is for us to find the baby's mum and ensure she is safe and well and has the help and support that she needs.
"We know there has been a huge outpouring of sympathy from the local community and we have received offers of assistance and donations of clothing and blankets for the baby from local charities and bereavement groups.
"We are grateful but would ask that no further items are donated.
"I would continue to ask for anyone who has information to please come forward.
"It is vital that we are able to find the baby's mum and reunite the baby with his family so that he can be put to rest."
Anyone who has information is asked to DM @MerPolCC or call Crimestoppers anonymously on 0800 555 111.