A military prosecutor investigating media leaks from an inquiry into the 2010 air crash that killed then-Polish president Lech Kaczynski shot himself in the head after a press conference.

At the press conference Monday, Mikolaj Przybyl denied his office eavesdropped on journalists as part of the military probe.

Reporters at the conference in the western city of Poznan said Przybyl asked them to leave the room so that he could take, in his words, “a break.” Minutes later, they heard a gunshot.

Doctors at the hospital where Przybyl is being treated said he is in stable condition and conscious with a wound to his head.

President Kaczynski and his delegation were on their way to commemorate the 1940 massacre of some 22,000 Polish officers in Russia's Katyn forest when the plane went down in heavy fog on April 10, 2010. The delegation included 95 senior military and government officials as well as the first lady. All on board the plane were killed.