A kind of explosive used by Chechen rebels has been found in one of the airliners that crashed simultaneously on Tuesday, Russian investigators said, making the disaster seem like a political attack.
The FSB security service declined to comment on an internet claim by an Islamist group that its followers had brought the planes down on Tuesday, killing at least 89 people, to avenge the killing of Muslims in Chechnya.
But officials said they had identified ‘‘a number of people with possible links to the terrorist act’’.
Investigators were tracing the background of two passengers with typically Chechen surnames, one from each plane.
‘‘During the examination of the wreckage of the Tu-154 plane, traces of explosives were found,’’ said a spokesperson for the FSB, entrusted by President Vladimir Putin with the probe. She said the explosive — Hexogen or RDX — was of a type used in some previous attacks blamed on Chechen separatists. — (Reuters)