Ysgol Dyffryn Aman in Carmarthenshire has been closed as investigations continue into a reported stabbing on Wednesday, Dyfed-Powys Police said.

A local councillor who serves on the school's governing body said she had been told the incident involved a stabbing.

Those injured were said to be receiving treatment.

One person has been arrested and police say they are not looking for anyone else in connection with the incident.

Emergency services remain at the scene and the force said it is working closely with the school and Carmarthenshire County Council.

Pupils were released from the school at about 3.20pm, after it had been in lockdown since about 11am.

A spokesperson said: "We are aware that there is footage of the incident currently circulating on social media.

"We would ask that this is removed to avoid contempt of court and distress to those affected."

Police have asked people not to speculate as the investigation is ongoing.

A spokesperson for Ysgol Dyffryn Aman said the family members of the injured have been informed.

"We would like to reassure parents and the public that the incident has been contained," they added.

The comprehensive school in the town of Ammanford has about 2,000 pupils.

Police did not give the ages of those hurt or of the person who has been detained.

'Deeply worrying'

Hundreds of parents were assembled outside the school by 3pm, waiting to collect their children from the school.

Rachel Young, a parent at the school, told Sky News her daughter and other pupils had been "locked" in the classroom.

"She's fine but they've locked them in the classroom" she said.

"She's scared obviously. She says she's fine, but they all say 'I'm fine' but they're obviously not going to be and what's going to happen from now on, I don't know. We don't even know if the school's going to be open.

"I wanted to get here. I rang the school and they said they're not allowing anyone in or anyone out, but they couldn't really comment any further than that."

Councillor Rob James, who represents Lliedi ward, said: "My thoughts are with the headteacher, teaching staff, parents and pupils of Ysgol Dyffryn Aman after today's major incident.

"I have been in contact with Carmarthenshire Council and will provide any support I can to the school during this difficult time."

First Minister Vaughan Gething said he was "shocked to hear" about the incident, adding it was "a deeply worrying time for the school, families and community".

Prime Minister Rishi Sunak expressed his "shock" at the news.

"I want to thank the police and emergency services for their ongoing response and my thoughts are with all those affected," he said.

UK Labour leader Sir Keir Starmer also said the developments were "awful news".

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In an interview with WalesOnline, Councillor Karen Davies - a LEA governor at the school - said she had been told there was a stabbing.

"I have been told someone has been arrested and that two members of staff have been stabbed, but have no confirmation on how serious the injuries are," she told the news website.

"I send my thoughts to those injured and all the people there. I know how well the school rehearsed lockdown and I am sure everything is under control."

Leader of the Welsh Conservatives, Andrew RT Davies, described the incident as "violent" and said it was "deeply sad and distressing".

Adam Price, Senedd member for Carmarthen East and Dinefwr, said: "As we wait for more information to be released, my thoughts, like the rest of us, are with the school's community."

Emergency response

A spokesperson for the Welsh Ambulance Service said the service was called shortly after 11.15am to an incident on Margaret Street.

"We sent four emergency ambulances and the hazardous area response team to the scene, where crews were supported by two Cymru high acuity response unit paramedics and an operational manager," the spokesperson added.

"Advanced critical care support was delivered by the emergency medical Retrieval and Transfer Service in two Wales Air Ambulance charity helicopters."

The Wales Air Ambulance confirmed it was in attendance at an incident in the region.

"We mobilised three critical care teams at 11.30am. Our Dafen and Welshpool based crew were mobilised by air and our Cardiff based crew was mobilised by road," they said.

"Unfortunately, we cannot comment any further."