A 14-year-old girl has been arrested after she stabbed a teacher and two students at a secondary school in Manchester, the BBC reports.Officers were called to the Co-op Academy on Plant Hill Road in Blackley about 8.30am on Tuesday following reports of multiple stabbings.Greater Manchester Police said a 27-year-old male teacher, a 14-year-old boy and a 14-year-old girl were taken to hospital with injuries which are not believed to be life-threatening.According to the police, the teacher suffered neck injuries, while the boy suffered ear injuries and the girl suffered shoulder injuries. The teenage suspect was arrested at the scene on suspicion of causing grievous bodily harm with intent.School officials said staff immediately locked down the site and restrained the student before authorities arrived.Chief Inspector John Shilvock said: “We understand this incident will have caused concern to pupils, staff and parents.” He added, “School staff quickly dealt with the incident before authorities arrived, and there is no widespread threat to the public.”The school closed after the incident, but administrators said, “Classes are expected to resume Wednesday.”After receiving information about the attack, parents gathered outside the academy. Many described the incident as horrifying and said they were concerned about school safety and the increasing prevalence of knife-related incidents with young people.One parent told BBC Radio Manchester, “You hear things in the news, but you never think it would happen at your child’s school. To have it happen on your doorstep is terrifying.” Other parents said they hoped additional measures would be introduced to prevent similar attacks in the future.