Police investigating the death of a baby girl whose body was found at a waste treatment site today said it was unlikely the child was born in hospital.
West Yorkshire Police said the girl was white and she may have died two or three days before her body was discovered.
A post-mortem examination was inconclusive.
The grim discovery was made by staff at a firm in Valley Road, Bradford, in the early hours of Thursday.
Police have renewed their appeal for the mother of the newborn girl to come forward.
Detective Superintendent Sukhbir Singh said: “I thank members of the public who have contacted us so far. Our focus continues to be to identify this baby’s mother and I would urge her friends, relatives and neighbours to contact West Yorkshire Police.
“Somebody in West Yorkshire must know who the mother of this child is and I would ask them to provide the key piece of information we need to find her.
“We remain greatly concerned for the mother’s condition and welfare and want to ensure she gets the medical attention she deserves,” he added.
Police said some 97 loads of waste were delivered to the Valley Road unit on Wednesday, of which 51 loads were from Bradford and the remainder were from elsewhere in West Yorkshire.
Detectives have not ruled out the possibility the youngster may be from an area of West Yorkshire other than Leeds and Bradford.
end s conference in Leeds, Detective Superintendent Sukhbir Singh said his priority was tracking down