A 15-year-old student has been left seriously injured after being stabbed at school during lunchtime.
Nottingham University Academy of Science and Technology (NUAST) went into lockdown 'for two hours' after the reports of the stabbing at around 1.35pm today.
The teenage boy was rushed to the nearby Queen's Medical Centre hospital, where he remains.
A second 15-year-old boy was been arrested at the scene, with police saying the two pupils were known to each other.
The force added there is no information to suggest it was linked to the national 'School Wars' social media posts published on Wednesday.
Nikhill Finn, a student at the school, explained he and his peers 'tried to stay calm' while the incident unfolded.
The 15-year-old said: 'We got brought out the music room and put in a room for all of lunch and entire afternoon.
'We were told to go as quickly as you can and we saw there were police and everything. We just tried to stay calm, played on computers for a while and I called my dad.'
Nottingham University Academy of Science and Technology (NUAST) went into lockdown 'for two hours' after the reports of the stabbing at around 1.35pm today
A 15-year-old student was rushed to the nearby Queen's Medical Centre hospital, where he remains with serious injuries
A second 15-year-old boy was been arrested at the scene, with police saying the two pupils were known to each other
Nikhill's mum, who did not wish to be named, said NUAST is 'normally a really good school'.
However, parents have been critical of NUAST's handling of the situation, as they say they were only informed of the incident at 3pm, when an email from the school's headteacher, Dave Thompson, was sent.
In the email to parents, Mr said: 'I am very sorry to inform you there was a serious incident at school today in which a student was stabbed.
'The incident in the school is now over and is being dealt with by police. We will be open tomorrow as normal.
'Clearly, this has been a very traumatic event for the whole school community and support will be provided for any staff or pupils affected.
'Our thoughts and best wishes are with our students and their families at this incredibly difficult time.'
Parents claim the email left them anxiously waiting for confirmation that their children were okay.
Malik Mouqeet, whose 15-year-old son attends the school, criticised the communication from the school and police, saying he only learned his child was okay when he returned from the school on a bus at 4pm.
'It's not very good. I thought it was a small accident at first but then saw the cordon,' he said.
He added: 'I'm not happy with the information from the school and police. They should allow kids to switch their phones on. That one hour was very difficult.'
Ahmed Bashir was still waiting for his 14-year-old daughter to be let out of the school at around 4pm.
He knew both his daughter and his 12-year-old son were okay, but faced an anxious wait when he first arrived just after 3pm.
The 45-year-old said: 'When I arrived police cars had stopped everywhere but wouldn't say anything. I crossed my fingers that they were okay.
'The problem is you can't use phones in there. I tried to call and text my daughter but she didn't respond. I was a bit worried. I wondered what was happening.'
Eva, who did not wish to give her surname, was another parent waiting for her child to be released.
She said she arrived at the school to pick up her daughter who is in Year 9 just before 3pm to find police everywhere.
She said: ‘It was horrible. Nobody had sent any message. I understand this is an emergency but the school hadn’t sent anything. I’m waiting to see my daughter who was stuck.’
Superintendent Chris Pearson, of Notts Police, said: ‘This is obviously an unsettling incident to occur on school grounds, and we are working closely with NUAST.
‘A 15-year-old boy has sustained a stab injury and been sent to QMC for treatment. His injuries are currently believed to be serious.
‘His family will be supported by specially trained officers while a thorough investigation is underway.
‘A 15-year-old boy has been arrested in connection with this incident.
‘We know this is likely to cause alarm and distress across our local community especially for parents and pupils in the area.
‘What we know so far is that both victim and suspect are known to each other and there is no information to say this is linked to the national "School Wars" social posts.
‘I also want to stress that there is no wider threat to any other pupils at the school.
‘We will be working closely with the school over the coming days to establish what has happened.’