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A Chinese relative of the passenger onboard Malaysia Airlines flight MH370 sleeps after a briefing meeting for families at Lido Hotel on March 15, 2014 in Beijing, China. The search for missing Malaysian airline MH370 expands to the Indian Ocean March 15, 2014 in Beijing, China. The missing aircraft carrying 227 passengers and 12 crew disappeared one week ago baffling the international rescue and search team who have found no remains or clues in the waters surrounding South East Asia. All passengers and crew are currently under investigation for possible sabotage although no evidence of such activity has been found. (Photo by Feng Li/Getty Images)
A Chinese relative of the passenger onboard Malaysia Airlines flight MH370 sleeps after a briefing meeting for families at Lido Hotel on March 15, 2014 in Beijing, China. The search for missing Malaysian airline MH370 expands to the Indian Ocean March 15, 2014 in Beijing, China. The missing aircraft carrying 227 passengers and 12 crew disappeared one week ago baffling the international rescue and search team who have found no remains or clues in the waters surrounding South East Asia. All passengers and crew are currently under investigation for possible sabotage although no evidence of such activity has been found. (Photo by Feng Li/Getty Images)

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Families wait for word of missing flight

Families of Malaysia Airlines Flight 370 passengers face the anguish of waiting for answers. CNN's Pauline Chiou reports.

Families wait for word of missing flight

Families of Malaysia Airlines Flight 370 passengers face the anguish of waiting for answers. CNN's Pauline Chiou reports.