During a flight from Lagos to Washington, D.C., a Boeing lost 300 meters of altitude. Almost 40 people were injured in the subsequent emergency landing.

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.

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

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.

The United States National Transportation Safety Board (NSTB) has said it is investigating a United Airlines flight from Lagos to Washington

A United States flag carrier, United Airlines flight UA613, outbound from Lagos to Washington, has declared an emergency and returned to Lagos.

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

Six people were taken to hospital, and many more were injured after a United Airlines flight from Lagos heading to Washington D.C. experienced a sudden in-flight movement. The United States has opened a probe into the unexpected movement, as the cause is still unknown.

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

Nearly 40 people were injured when a Boeing 787-800 plane suddenly lost altitude during a United Airlines flight from Lagos, Nigeria, to Washington, D.C., early Friday, officials said.

The U.S. National Transportation Safety Board (NTSB) is investigating a United Airlines flight incident that led to passenger and crew injuries following a sudden aircraft movement. The flight, en route from Lagos to Washington D.

In an update, Nigerian officials said an additional 27 passengers and 5 crew members suffered minor injuries in the incident. In all, 38 were hurt.