A 14-year-old girl appeared in court on Monday (20 November) charged with the attempted murder of another girl in a village on the edge of the Brecon Beacons.
Dyfed-Powys Police said officers are investigating a stabbing which is said to have taken place in Coelbren shortly after 7 pm on Thursday.
The victim, whose name and age have not been confirmed by detectives, sustained serious injuries but is in a stable condition in hospital.
The accused, who cannot be named due to her age, has been charged with attempted murder and possession of a bladed article.
She was remanded into secure accommodation and the next court hearing will be on 18 December at Swansea Crown Court.
Anybody with information relating to the incident can contact the force on 101, by emailing email@example.com or via an online form on its website with information.
To remain anonymous contact independent charity Crimestoppers on 0800 555 111.
Want a quick and expert briefing on the biggest news stories? Listen to our latest podcasts to find out What You Need To know...