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.”

A United Airlines Boeing 787-8 Dreamliner, flight UA613 from Lagos to Washington Dulles International Airport, made an emergency return landing in Lagos due to a technical issue, resulting in injuries to passengers and crew,

Several passengers onboard the United Airlines flight UA613 sustained injury as the aircraft made an emergency return to Lagos. The Washington bound flight with 245 passengers, eight flight attendants and three pilots made direct return to the Murtala Muhammed International Airport,