Superintendent Rich Jones, from South Wales Police, said: “This is clearly a very serious incident which has caused significant shock and concern for both the local and wider community.
“We have a dedicated team of detectives working hard to establish the exact circumstances that have led to the tragic death of this young girl.
“While the investigation is still in its early stages, we can confirm that those involved are understood to know to each other and we are currently not looking for anyone else in connection with the incident.
“There will be significant police presence in Baglan Street over the weekend but we will reopen the road at the earliest opportunity.
“In the meantime, the support and understanding of the local community is very much appreciated.”
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