Poland has detained a 19-year old man suspected of planning a terrorist attack, interior ministry spokesman Jacek Dobrzynski said on Thursday.
The suspect, along with two other men arrested in the case earlier, were gathering pyrotechnic materials and were inspired by actions on mass-killers including Anders Breivik, Dobrzynski said on X.
In 2011 Breivik massacred 77 people, shooting to death 69 participants in a summer camp on a Norwegian island, and killed eight others by detonating a van bomb in the middle of Oslo. He has inspired other attacks, including a 2019 attack on a mosque in New Zealand.