DC plane crash: What we know about the victims and ongoing investigation

Photographs of athletes Jinna Han and Spencer Lane and coaches Vadim Naumov and Evgenia Shishkova, all of whom died in the crash of American Eagle Flight 5342 near Washington, DC, are displayed at the Skating Club of Boston [Brian Snyder/Reuters]

All 67 people on board an American Airlines flight and a Black Hawk helicopter that collided in midair while the plane was landing at Ronald Reagan Washington National Airport near Washington, DC, are believed to be dead, according to officials.

This is the deadliest aviation tragedy in the United States since November 12, 2001, when an American Airlines plane crashed into a residential area of Belle Harbor, New York, shortly after taking off from John F Kennedy International Airport in New York City, killing 260 passengers on board and five people on the ground.