WARSAW, — A 15-year-old fatally stabbed the caretaker at his former school in Poland and wounded two other adults on Thursday, a day after a similar knife attack wounded nine in a Polish high school, police said. Police arrested the boy after the attack at the John-Paul II primary school in Leszczydol-Nowiny, a small town 70 kilometres northeast of Warsaw, a police spokesperson told AFP. "The caretaker was the first person assaulted by the former student," said Katarzyna Kucharska, spokesperson for the police in the Warsaw region. "Then a teacher and the head of the school managed to overpower him, even though he struck them with his weapon." The caretaker, 37, died of their wounds, regional police said on X (formerly Twitter). Police said they had also detained a 17-year-old boy in another Polish town after he made it known that he intended to do "something spectacular" at his school. Officers found a bag containing two knives in his apartment. Thursday's attack came a day after a 19-year-old was arrested after nine people were wounded at a high school in Ostroleka, 120 kilometres north