None of the versions of the Russian Airbus A321 air crash should be excluded, RIA Novosti reports citing Russia’s President spokesman Dmitry Peskov, as saying.

“Now, none of the versions should be excluded, in fact, the investigation agency is just beginning its work. Which version will form the basis for ongoing investigation, we cannot say right now,” said Peskov. 

He also noted that it is necessary to wait for ‘the first results of investigation.'

It was reported earlier that Russian Airbus A321 run by Kogalymavia airline crashed in Sinai Peninsula while travelling from Sharm El-Sheikh to St. Petersburg on October 31, 2015. All 224 people on board died, including 4 citizens of Ukraine. According to Egyptian authorities, technical problems were the most likely cause of the air crash.