The death of a newborn baby boy in Weston-super-Mare is being treated as a "potential homicide", police have said.
The infant's body was found by a member of the public in a private garden on Saturday morning.
Avon and Somerset Police said a man and woman had been arrested in connection with the incident and remained in custody.
They did not state what the pair had been arrested on suspicion of.
Detective Chief Inspector James Riccio said: "Due to significant developments in this investigation, I can confirm we're now treating the baby's death as a potential homicide.
"A forensic post-mortem examination will be held later this week, but we don't anticipate any conclusive results for some time.
In an earlier statement, the force said it had managed to locate a woman who they believed was the baby's mother after issuing an appeal to find her.
It said she had been taken immediately to hospital for medical attention and support.
