A teenage girl has been arrested on suspicion of attempted murder after two teachers and a pupil were stabbed at a school in West Wales.
Three people were left injured at Amman Valley School in Carmarthenshire during the incident at 11.15am.
Two air ambulances were sent to the school, also known as Ysgol Dyffryn Aman, as worried parents rushed to the scene.
Dyfed-Powys Police said: "One person has been arrested and we are not looking for anyone else in connection with this incident.
The south Wales school is reportedly on lockdown
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“Emergency services remain at scene and the school has been closed while investigations continue.”
Amman Valley School separately posted on its website: “You will be aware of the incident that has taken place at Ysgol Dyffryn Aman today.
“The family members of all injured persons have been informed. We would like to reassure parents and the public that the incident has been contained.”
David Llywelyn, who lives opposite the school, told S4C News: "Something serious has happened. What I see is two air ambulances on the school field and two ambulance incident support units - there are up to ten police cars here."
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A senior educational professional, who does not work at the school, but has spoken to those who do, told WalesOnline: "I understand that two learners, two girls, were involved and that two members of staff intervened.
"I don't know how serious the injuries are but it is awful. I have that from someone who works in the school."
Prime Minister Rishi Sunak said: "Shocked at the news emerging from Ammanford today. I want to thank the police and emergency services for their ongoing response and my thoughts are with all those affected."
Home Secretary James Cleverly said: "I am being kept informed about the events in Ammanford, Wales. My thoughts are with the school and all those involved. I want to thank the police & emergency service for their ongoing response. It is important they are given the space to carry out their investigations."
Leader of the Welsh Conservatives Andrew RT Davies MS has said: "The reports emerging from Ysgol Dyffryn Amman are extremely concerning. Schools should be a place of safety, learning and discovery. It is deeply sad and distressing that today teachers and pupils have had that safety shattered by a violent incident.
"My thoughts are with all staff and pupils at the school, and we thank the emergency services for their work."
Local Independent MP for Carmarthen East and Dinefwr Jonathan Edwards said: "Thoughts are with everyone back home and the with the authorities responding."
First Minister Vaughan Gething said: "Shocked to hear news of serious incident in Rhydaman. A deeply worrying time for the school, families and community."
A Carmarthenshire County Council spokesperson said: "The family members of all injured persons have been informed. We would like to reassure parents and the public that the incident has been contained."
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