United Airlines said it was cooperating with U.S. and Nigerian investigators to determine what exactly happened on the flight.

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

United Airlines has said it is working with aviation authorities in Nigeria and the United States to ascertain the cause of its recent incident.

The plane headed back to Nigeria after experiencing "unexpected movement" mid-flight on Friday, Jan. 24, according to multiple reports

Six people were injured on a flight from Nigeria to Virginia. The airline also saw a series technical issues in March.

Six were injured on a United Airlines flight from Lagos to Washington after the plane had a technical issue that caused an "unexpected movement."

Six people were seriously injured when a United Airlines flight experienced sharp drops in speed during its journey to Washington Dulles International Airport.

A United Airlines flight between Nigeria and the US experienced sudden, unexpected movement inflight, injuring 38 people

Four passengers and two crew members sustained serious injuries, while 27 passengers and five crew members suffered minor injuries.

Thirty-eight people were injured, including six hospitalized, after a United Airlines flight from Lagos to Washington, D.C., encountered midair difficulties, Nigerian officials

A United Airlines flight bound for Washington Dulles International Airport had to turn back to Nigeria Friday after a technical issue with the plane injured multiple people, according to the airline.