Six injured in mid-air jolt that forced DC-bound United plane to make emergency landing in Nigeria

It is unclear what caused the jolt; United Airlines has said the cause was not severe turbulence, and that it is “working with aviation authorities in the US and Nigeria to understand the cause.”

​ It is unclear what caused the jolt; United Airlines has said the cause was not severe turbulence, and that it is “working with aviation authorities in the US and Nigeria to understand the cause.” Read More Breaking News, Latest News and Videos | CNN