The British government says it increasingly concerned that a Russian jet was brought down by a bomb and is suspending flights to and from Egypt's Sinai Peninsula.
Prime Minister David Cameron's office says British aviation experts are travelling to the Sinai resort of Sharm el-Sheikh, where the flight that Saturday originated from, to assess security before British flights there will be allowed to leave.
No British flights are flying there Wednesday.
Cameron's office at Downing St. says "we have become concerned that the plane may well have been brought down by an explosive device."
The British government's crisis committee is due to meet later Wednesday. The crash in the Sinai killed all 224 people on the Metrojet Airbus plane.