Vladimir, a retiree who didn't want to give his surname, said Russians' support for the Syria campaign would remain unaffected even if a bomb was shown to have brought down the plane. "A plane crashed, so what? Our planes have crashed before because the pilot was drunk," he said.
"Whether [perceptions] change will depend on our zombie-box," he added, using a term for state television popular among the opposition.
Russian newspaper Kommersant quoted a source saying Egyptian experts had determined several passengers died from "bomb blast trauma".
In general, Russian media remain hesitant to raise the spectre of a terrorist attack. State news agency RIA Novosti quoted an unnamed Russian official in the investigation as saying: "At the moment it is only possible to talk about the presence of undefined sounds registered by the flight recorder" and that it was "premature" to say they came from an explosion.
The government newspaper, Rossiyskaya Gazeta, reported that the black box did not provide conclusive data that an explosive device had been on board.Observer