Law enforcement says American Airlines plane broke into two pieces. BREAKING NEWS!

What we know about the plane
There were 60 passengers and four crew members on American Eagle Flight 5342, which was traveling from Wichita to Washington, D.C.'s Reagan National airport, according to American Airlines.

The crash took place near the airport.

American Airlines said it was in contact with authorities and assisting with response efforts. The company said its concern was “for the passengers and crew on board the aircraft.”

What we know about the helicopter
The Army confirmed that the aircraft involved in the incident was a Black Hawk helicopter operating out of Fort Belvoir, Va.

Preliminary indications are that three people were on board the helicopter and that it was on a training flight, according to an Army official.

What we know about the search for survivors
Search-and-rescue teams are at the Potomac River.