A 14-year-old who stabbed his art teacher told French police he attacked her because he had too much hatred, a prosecutor has said. The 60-year-old woman's condition remains a serious concern after she was stabbed three to four times in her chest in front of 22 students in south-eastern France on Tuesday, a local official said. Toulon prosecutor Raphaël Balland stated that the boy had premeditated the attack, having described to police taking the knife from his kitchen at home with the intention of stabbing his teacher. La Guicharde school, in Sanary-sur-Mer, was evacuated after the attack, and lessons the next day were canceled. Balland mentioned there was no known religious or political motivation for the stabbing, adding that the student was allegedly upset that the teacher had reported several disciplinary incidents against him, which the boy said were unfair. The teenager reportedly told authorities he deeply regretted the attack and felt more hatred towards himself than towards the victim. A decision on whether to place him in pre-trial detention will be made when he appears in court. The victim, who has been at the school for 28 years, is currently in the Sainte-Anne Military Hospital in Toulon where she has been stabilized after surgery but remains in serious condition. This incident is part of a disturbing trend of violence in French schools, following several high-profile attacks in recent years.