Traces of explosives found on crashed Polish presidential jet

WARSAW (AFP) - Traces of explosives have been discovered on the wreck of the Polish presidential jet which crashed in Russia in 2010, killing then president Lech Kaczynski and 95 other people, a newspaper reported Tuesday.

"Tests have confirmed the presence of TNT and nitroglycerine on 30 seats.

The substances were also found on the area linking the fuselage with the wing," Poland's leading Rzeczpospolita daily said.

The recent tests were conducted by "Polish prosecutors and experts" it said, but testing by Polish and Russian investigator immediately after the 2010 crash had ruled out explosives.