A 14-YEAR-OLD girl accused of stabbing two teachers and a teenager at a school in Ammanford had previously brought a knife in to school, a jury heard.

The teenager – who cannot be named due to her age – denied three offences of attempted murder following the incident at Ysgol Dyffryn Aman on April 24.

She previously admitted wounding with intent against all three victims, as well as having a knife on a school grounds.

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Opening the case, prosecutor William Hughes KC described the attacks as “a serious episode of violence at the school for which [the defendant] was responsible for”.

Mr Hughes said the defendant confronted assistant headteacher Fiona Elias, who was talking to fellow teacher Liz Hopkin, during morning break on April 24.

Mrs Elias said the defendant had “sinister eyes” and was playing with something in her pocket. When the teacher asked what it was, the defendant replied: "Do you want to see what's in my pocket?" before pulling out a blade on a fishing multi-tool and attacking Mrs Elias.

As she attacked Mrs Elias, the defendant said: "I'm going to kill you. I'm going to f****** kill you", Mr Hughes said.

Ms Hopkin restrained the defendant by grabbing her from behind, which allowed Mrs Elias to get away. She dropped the blade "momentarily", but got free, picked up the knife and attacked her.

Police and forensic investigators at Ysgol Dyffryn Aman.Police and forensic investigators at Ysgol Dyffryn Aman. (Image: PA)

Two other members of staff, Stephen Hagget and Darrell Campbell, arrived and tried to calm the defendant as Ms Hopkin got to safety. They described the defendant as having “a vacant look on her face”.

The defendant is reported to have told them: “I'm going to kill her when I see her, Mrs Elias.”

The girl “brandished the weapon” at the teachers, and “rushed past them” towards the admin block, where the teenage victim was. 

The teenager heard the defendant call her name and say “I'm going to f****** kill you”, and then saw her running towards her with the blade and attacking her, Mr Hughes said.

Multiple police vehicles outside Ysgol Dyffryn Aman following the attack.Multiple police vehicles outside Ysgol Dyffryn Aman following the attack. (Image: Supplied)

The defendant was accused of making “a number of comments” whilst sat in the back of a police vehicle, allegedly saying "I stabbed her, oopsies" when referring to the teenager, asking if the victims were dead, and later allegedly saying: "I'm pretty sure this will be on the news... that's one way of being a celebrity".

She was taken to Llanelli Police Station and answered no comment in her three interviews.

Ms Hopkin sustained stab wounds above her knee, to her leg and chest, to her shoulder blade and to her neck, and was airlifted to Heath Hospital in Cardiff.

The other two victims were taken to Morriston Hospital in Swansea where they were treated for stab wounds.

Mr Hughes added that the defendant had brought “a small kitchen knife” in to school at the start of the academic year, which had been discovered by Mrs Elias when searching her bag.

The trial, before Judge Paul Thomas KC at Swansea Crown Court, was adjourned until Wednesday.