British investigators claimed that a bomb planted in luggage before take-off is likely to be the reason of the Russian plane crash in Sinai, Al-Bawaba News reported Friday. BBC quoted those British investigators that they believe the bomb was placed in the luggage carried on the plane, but they did not identify the person who placed it, expecting that he could be one of the flight's passengers or an employee at the Sharm El-Sheikh Airport. Britain had suspended all flights to and from Sharm El-Sheikh Airport on Wednesday morning, before British PM David Cameron retreated the decision resuming aviation to the Egyptian city on Friday. The British authorities claimed that the crash was a result of a bomb on board, through intelligence and track communications between the militants in Sinai.