Ten people have been injured in a knife attack at a school in Ostroleka in northeastern Poland, a regional governor says, with police detaining the 19-year-old suspect, who was among those hurt, shortly after the incident.
Masovian Regional Governor Mariusz Frankowski told reporters that nine people had been taken to hospital but that none of them was in a life-threatening condition.
"The injured included five students, two teachers and two bystanders as well as the perpetrator, who inflicted self-harm," he said.
Police said the suspect was a student at the school and that he had attacked people with a machete.
Bomb disposal experts were called to the scene.
National Prosecutor Dariusz Korneluk told private broadcaster TVN24 that a homemade explosive device that nearly detonated was found in the attacker's backpack.
The attack took place at a vocational school for teenagers.
Fire brigade spokesman Adrian Stupski told state news channel TVP Info that students had barricaded themselves into classrooms in self-defence before they were rescued.
Police said they detained the suspect about 20 minutes after the attack and posted a photo on X showing a man they appeared to have apprehended lying face down in a wooded area.
The town's mayor Pawel Niewiadomski said the situation was under control.
He announced that psychological support would be provided for the pupils and teachers affected.
Ostroleka has a population of about 48,000.
The vocational training centre has been closed until further notice.
Lessons have also been suspended at all other schools in the town.
with Reuters Australian Associated Press
