Comprehension seems to be an issue here.
Here are two paragraphs, the 1st from the top of the page, the 2nd from the bottom end.

1.Col Mikolaj Przybyl was defending a military investigation into media leaks related to the air crash that killed the Polish president in 2010.

2.At the news conference, Mr Przybyl had denied prosecutors in Poznan, western Poland, had eavesdropped on journalists who were investigating the crash, AFP news agency reports.

The conference was regarding media leaks,not the plane crash itself.