Explosives have been found in the wreckage of the second of two jets which crashed almost simultaneously this week, Russia's FSB security service said today.
"Additional examination of the fragments of the Tu-134 aircraft which crashed on Tuesday ... has revealed traces of hexogen," an FSB spokesman said by telephone.
The FSB said on Friday that hexogen, more widely known as RDX, had been found in the wreckage of the other plane which crashed on Tuesday in southern Russia.