A 41-year-old woman has been arrested on suspicion of murder following the death of a child.
Officers were called to Cwm Du Close in the Gendros area of Swansea at about 20:30 BST on Thursday.
The woman is in custody in Bridgend, South Wales Police said, with the force’s major crimes investigations team looking into the death.
The force said the child and the woman lived together and officers are not looking for anyone else in connection with the death.
“This is a distressing incident which will be a shock to the local community,” said Chief Supt Chris Truscott, divisional commander for Swansea and Neath Port Talbot.
“Detectives are working to establish the circumstances of the child’s death and there will be an increased police presence in the area to offer reassurance to local residents.
“Speculation on social media is unhelpful and will cause distress to those affected by this incident at an already difficult time.”
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