Investigators are intensifying their search into what caused the collision between American Airlines Flight 5342 and an Army Black Hawk helicopter, with recovery crews still working to pull wreckage from the Potomac River and initial concerns already raised about the path of at least one of the aircraft.

Officials have positively identified 55 of the 67 people killed in Wednesday's midair collision between an American Airlines passenger jet and a military helicopter over the Potomac River, Washington,

More than 60 people are presumed dead after an American Airlines passenger jet and an Army helicopter crashed midair near Washington, D.C, Wednesday evening, officials have said.Flight 5342 from Kansas was on the final approach to Ronald Reagan National Airport when it collided with the Black Hawk helicopter before exploding a huge fireball.