“All decisions will be communicated, and all information important to the public is being provided on an ongoing basis,” Kosiniak-Kamysz, who is also a deputy prime minister, told reporters.
The Operational Command of Poland's Armed Forces said Russian drones repeatedly crossed into Polish territory during Moscow’s overnight barrage against Ukraine.
Prime Minister Donald Tusk said that drones posing a direct threat were destroyed.
Kosiniak-Kamysz, who cut short a visit to London to return to Warsaw, said he briefed his counterparts from Britain, Germany, France and Italy, as well as newly appointed French Prime Minister Sébastien Lecornu, on the incident.
He added that he was in constant contact with defence ministers from Finland, Sweden and the Baltic states, as well as with NATO officials.
“It was a very demanding night for the Polish military, for pilots, for ground crews, for all components of the national security system,” Kosiniak-Kamysz said.
He added that all available systems and procedures, both Polish and allied, were activated and “functioned as they should.”
The defence chief said Polish and allied aircraft involved in the overnight operation had returned to base, and air defence and monitoring systems were back on routine status.
Asked whether the situation was now safe, Kosiniak-Kamysz replied: "I appeal for calm. Air operations have concluded, and all information has been provided."
Polish forces have regularly scrambled in recent months during Russia’s mass airstrikes on Ukraine, but the overnight incident—in which Polish and allied aircraft used live weapons against more than a dozen drones—was without precedent in NATO’s recent history, Polish state news agency PAP reported.