Police remain at Ysgol Dyffryn Amman today, following an incident yesterday in which three people were injured in an alleged knife attack at the school.
Dyfed Powys Police say officers will be at the school throughout the day as the CID-led investigation progresses.
Police have confirmed that 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. One of the injured teachers has been named locally as Deputy Headteacher, Fiona Elias.
All three victims have now been discharged from hospital, having been treated for knife injuries.
Carmarthenshire Superintendent Ross Evans from Dyfed Powys Police 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 continue to work with Carmarthenshire County Council and other agencies as they provide support to those affected by yesterday’s events.”
Carmarthenshire Council have said that teachers and staff will be returning tomorrow (Friday 26 April) to prepare the building, with the intention for the safe return of all pupils on Monday.
Council Leader, Cllr. Darren Price said: “On behalf of Carmarthenshire County Council I would like to express our relief that the three injured individuals have been discharged from hospital and we wish them a speedy recovery.
“Yesterday’s incident came as a great shock to everyone and I would like to recognise the excellent response of the staff and pupils at the school, Council staff and all emergency services involved.
“I am humbled by the strength, resolve and determination by all involved to see our children return to their classrooms as soon as it is safe to do so.”

Meanwhile, a teacher at the school Darrel Campbell, brother of Plaid Cymru politician Cefin Campbell, has been hailed as a hero after disarming the teenage attacker by putting her in an armlock while waiting for emergency services to arrive.
Speaking to BBC Radio Wales, Cefin Campbell said his bother, who had been a teacher at the school for 40 years, was the first on the scene.
“He probably did what most people would have done in the same situation, try to calm things and restrain people from making the situation worse,” Mr Campbell said about his brother.
“Obviously he’s been shaken by the whole experience as have all the staff, pupils, parents and so on.
“But I think it’s the sense of shock because he’s been there for 40 years as a teacher and he’s never ever seen anything like this.”
(Lead image: Dyfed Powys Police)
