It is understood the girls were arrested after concerns about behaviour were reported, and a knife was discovered in a bag. It is also understood the threat to kill allegation involved a teacher, named locally as maths teacher Alison Cray, but that no confrontation took place
Cwmcarn resident, Gary Lewis, told the Argus: "Living near the school, I see pupils all the time and you would never expect them to be carrying any sort of weapon as it's generally a good school."
His wife, Angela, added: "Both of our children are training to be teachers and I would be scared for their safety if schools don't introduce ways of preventing pupils from carrying weapons.
"Schools need to stop burying their heads in the sand and become more like American schools before another incident occurs."
A statement on Cwmcarn High school's website, posted at 4pm today said the following:
"You may be aware that concerns were raised about a pupil in the school yesterday.
"Please be assured that that the concerns were dealt with swiftly. There was no risk to any staff or learner and the relevant support services were contacted as a precautionary measure.
"Cwmcarn High is a caring and safe environment and we are committed to everyone’s safety. Please do not hesitate to contact us if you have any concerns."
TWO TEENAGE girls were arrested at Cwmcarn High school yesterday for conspiracy to commit murder.
A Gwent police spokeswoman said: "Officers were called to Cwmcarn High School at approximately 11:54am, Thursday May 1, following concerns being raised about the behaviour of two pupils.
"Officers attended and arrested a 15-year-old girl from Newbridge and a 14-year-old girl from Risca.
"They have since both been released on police bail pending further enquiries.
"Nobody was harmed as a result of the incident, and the matter was resolved peacefully."
The 15-year-old girl from Newbridge was arrested on suspicion of threats to kill, possession of a bladed article on a school premises and conspiracy to commit murder. The 14-year-old girl from Risca was arrested on suspicion of conspiracy to commit murder.
A spokesman for Caerphilly County Borough Council and Cwmcarn High School said: "We can confirm that concerns were raised about a pupil at Cwmcarn High School yesterday which were swiftly dealt with by staff and Gwent Police.
“Support is now in place for both pupils and staff and we would like to assure parents that all appropriate steps were taken to respond effectively to the situation. We are now helping the Police with their enquiries."