A deadly collision on Wednesday night between an American Airlines plane with 60 passengers and four crew members and an Army UH-60 Black Hawk helicopter with three soldiers remains under investigation amid questions about how the crash occurred.

Authorities said Thursday morning that they don't believe there are any survivors from the crash, and they added they pulled at least 28 bodies out of the Potomac River.

American Eagle flight 5342, a passenger jet coming from Wichita, Kan., collided with the helicopter as the plane was returning to Ronald Reagan Washington National Airport in Arlington, Va., before 9 p.m. on Wednesday.

The passengers on the jet included U.S. and Russian figure skaters, coaches and their family members returning from the U.S. Figure Skating Championships in Wichita.

Not much is known about why the helicopter crashed into the plane, but images shared online showed a fiery explosion

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