Russia and Egypt have urged caution over suggestions that a Russian airliner that crashed in Sinai killing 224 passengers may have been bombed.
BBC: Russia and Egypt urge caution on bomb theory
A handout picture released by Egypt's Prime Minister's office on Oct. 31, 2015, shows the wreckage of a crashed A321 Russian airliner in Hassana a mountainous area of Egypt's Sinai Peninsula.
