A Malaysian Airlines plane which has reportedly crashed in eastern Ukraine was flying at 33,000 feet - a typical cruising altitude for airliners - when it disappeared from radar, a Ukrainian official told Interfax.
The aircraft is thought to have come down in Torez, near Shakhtersk, some 25 miles from the Russia border.
The area has been the scene of fighting between Ukrainian troops and pro-Russian rebels.
Thousands of online users have taken to social media to call for the victims of the Malaysian airliner crash to be returned to loved ones.
United States intelligence officials admitted that they do not know who fired the surface-to-air missile that downed flight MH17.
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