Police remain at Ysgol Dyffryn Amman today, following an incident yesterday in which three people were injured.
Officers will be at the school throughout the day as the CID-led investigation progresses.
A teenage girl remains in custody after being arrested on suspicion of attempted murder.
Two teachers and a teenage pupil were taken to hospital with stab wounds, which were not life-threatening. All three victims have now been discharged from hospital, having been treated for knife injuries.
Carmarthenshire Superintendent Ross Evans said: “As can be expected with an incident as serious as this, there will continue to be a police presence at the school throughout the day today.
“Officers at the scene will be looking for evidence to assist the investigation, while other specialist teams will analyse any information submitted through our dedicated web page.
“We understand the level of concern in the community as people try to process the incident. We urge anyone affected by yesterday’s events to seek support, and not to share any videos, photos or information that might cause further distress to pupils or parents at the school.
“We continueto work with Carmarthenshire County Council and other agencies as they provide support to those affected by yesterday’s events.”
Anyone with information that could help officers with their investigation is asked to report it to Dyfed-Powys Police through the dedicated Public Portal:
https://orlo.uk/2mZZy
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