A teenage couple from Suffolk arrested for questioning after the death of their baby son have been released on bail.
The four-month-old boy died on Wednesday.
Police officers were told of his death by staff at the West Suffolk Hospital in Bury St Edmunds.
A post-mortem examination revealed the baby had a number of injuries.
A 17-year-old woman and a 19-year-old man from Stowmarket were being questioned by officers.
They have been bailed to return to Bury St Edmunds police station next month.