Man of Honour
A flight from London to Washington DC has been diverted to Boston after the pilot declared an emergency because of a "passenger disturbance".
United Flight 923, with 182 passengers, left Heathrow Airport and landed at Boston's Logan International Airport, an airline spokesman said.
Three passengers are believed to have been involved with a confrontation with the crew on board the flight.
State police are said to have taken control of the plane after it landed.
Reports coming in all the time are changing, but the plane is still on the runway at Boston and has been boarded by officials.