Seems like the Russians are also accepting the fact that there was a bomb on the flight.

https://www.washingtonpost.com/world/confusion-reigns-at-egyptian-airport-amid-british-evacuation/2015/11/06/6cb177c0-840c-11e5-8bd2-680fff868306_story.html

Egypt is in deep shit now. After the Giza shooting and the massacre of the Mexican tourists, this incident was the last straw. The Egyptian tourist industry is never going to recover from this.