France's Transport Minister says it is likely "many" French passengers are aboard the missing Air Algerie flight.
Burkina Faso and Algeria are both former French colonies.
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A woman who was "dragged away" by a crocodile as her friend tried in vain to rescue her is reportedly still missing in Australia.
Police say at least one gunman armed with a high-powered rifle, began "shooting randomly" resulting in the death of a man in his 50s.
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