The Operational Command of Poland's Armed Forces said it had deployed "all necessary forces and resources at its disposal" to ensure the safety of Polish airspace and was "monitoring the situation on an ongoing basis."
Military aircraft were activated during the night, the Operational Command said in a statement, adding that measures were taken to ensure security in areas near the Ukrainian border.
"Ground-based air defence systems and radar reconnaissance have been placed on alert," the army said on X.
At about 6 a.m., the Operational Command said the threat of Russian strikes on regions bordering Poland had decreased and that military aircraft were returning to base.
"Activated ground-based air defence and radar reconnaissance systems have returned to standard operational activities," it said.
It reported no violations of Polish airspace during the attacks.
"We thank our NATO allies, the NATO Allied Air Command and the Dutch Air Force for their support with the air defence systems," the Operational Command said.
Russia launched a new wave of air strikes on Ukraine overnight, using dozens of ballistic, cruise, and hypersonic missiles as well as 168 drones, according to the Ukrainian air force.
It said that air defence units downed 145 drones and most of the cruise missiles but none of the ballistic missiles.
The Kyiv region was the main target of the attack, the Ukrainian air force said.
Source: IAR, PAP, polskieradio24.pl, Ukrinform, Reuters