Lagos 19 Apr (ANA)  - People in Nigeria are sharing a video of what appears to be smoke filling a plane while in flight. Some of the passengers appear calm, but you can hear the sound of people praying and chanting. One of the clips has been taken from the Twitter account of a passenger who has also been tweeting details of what happened. She says she was on a flight from the southern city of Port Harcourt to the commercial capital, Lagos, when the cabin started filling with smoke and people started praying.(ANA)

FA/ANA/19 April 2017----