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.

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

Inside United Airlines flight carnage as six hospitalised due to sudden jolt before emergency landing - The cause of the mysterious jolt to the plane is unknown, but US officials are investigating

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

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

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.

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.

Tinubu's message comes as the United States grapples with the aftermath of the shocking aviation disaster that saw an American Airlines passenger jet collide with a military helicopter, resulting in significant loss of life.

A United Airlines flight from Africa to Washington D.C. had to turn around on Thursday after a "technical issue" caused "unexpected aircraft movement," the airline said.

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.

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,