Jacek Dobrzyński, a spokesperson for the minister overseeing Poland's intelligence services, said after an emergency meeting of security services, police and interior ministry officials on Sunday: “We take this matter extremely seriously.” He said authorities considered there was a high probability the threats would have been carried out.
Information about the threat first reached the state protection service, which passed it to the police. Dobrzyński gave no further details. Government spokesperson Adam Szłapka said Tusk had learned about the “exceptionally concerning” threat first thing Sunday morning.
The alert follows three attacks at schools in Mazovia province in central Poland within four days, leaving one person dead and many wounded, including children. Dobrzyński noted that Polish services are receiving an increasing number of threats of various kinds every month.
Tusk said last month that Russia was likely to intensify hybrid attacks on NATO's eastern flank. He stated Moscow was planning strikes with drones or rockets on European countries that back Ukraine, among them Poland, with the goal of weakening Western support. Russia has denied any such plans.