Police are appealing for the mother of the child to come forward but believe the baby was no older than 48-hours-old.
Suffolk: Inquest into death of baby found at recycling centre opened
An inquest has been opened into the death of a baby girl found at a recycling centre in Suffolk earlier in May.
The child, known only as Baby S, was found by a member of staff at the centre in Needham Market in Suffolk on 14 May.
Police have since asked for the baby's mother to come forward, saying they are concerned for her wellbeing.
Following the discovery, detective chief superintendent Eamonn Bridger, said police "reasonably suspect that the baby was less than 48 hours old".
He said the mother would be "needing emotional support and urgent medical care".
"There is no doubt that she may be frightened but it is very important that we reach her or we speak to someone who might know her," he said.
The cause of death was provisionally recorded as "undetermined", adding further tests are required and could take some time.