Discuss as:

Helicopters crash near Berlin's Olympic Stadium

Hannibal Hanschke / AFP - Getty Images

A policeman stands next to the accident site where two helicopters crashed near the Olympic stadium in Berlin on March 21.

Hannibal Hanschke / AFP - Getty Images

Police officers work at the scene where two police helicopters crashed near the Olympic stadium in Berlin.

Johannes Eisele / AFP - Getty Images

The wreckage of a police helicopter is seen near the Olympic stadium in Berlin.

At least one police officer died after two helicopters collided at Berlin's iconic Olympic Stadium during a security exercise, authorities said.  -- Agence France-Presse