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 JohnPaul II primary school in Leszczydol-Nowiny, a small town 70 kilometres northeast of Warsaw, a police spokesperson said. `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 her wounds, regional police said on X. 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 of Warsaw.

Polish Prime Minister Donald Tusk told a Warsaw press conference that a `cult of violence` spread by social media and video games was behind the knife attacks.

Teenagers have fallen `under the influence of the internet, video games, and content that promotes pure violence`, Tusk said. `Unfortunately, it has also reached Poland.`-AFP