The US National Transportation Safety Board is investigating a United Airlines Holdings Inc. flight that turned back to Nigeria after a “sudden aircraft movement” occurred, injuring passengers and crew.

WASHINGTON (Reuters) - The U.S. National Transportation Safety Board said on Monday it is investigating a United Airlines flight on Friday from Lagos, Nigeria to Washington D.C., in which a sudden aircraft movement led to injuries of passengers and cabin crew.

In a statement on X, formerly known as Twitter, the NTSB said that it was investigating the January 24 incident involving a United Airlines Boeing 787-8, registered as N27903, which was operating flight UA613 from Lagos Murtala Mohammed Airport (LOS) to Washington Dulles International Airport (IAD).

The authorities in Nigeria said that the United Airlines plane had to return to Lagos after the episode. Six people were treated at a hospital, officials said.

A flight to Washington, D.C., returned to Nigeria after “unexpected aircraft movement” caused injuries, United Airlines said. A statement from United emailed to The Hill on Monday said that one of its flights headed for Washington,

A United Airlines flight to Washington, DC, was forced to make an emergency landing after the Boeing plane abruptly plunged in midair, hurting nearly 40 people onboard, including six