N-tv television and the Bild newspaper said the accidentoccurred in snowy weather on Thursday morning when around 400 federal police officers were conducting a training exercise on dealing with football violence.
Footage on n-tv showed at least one helicopter on its side on the ground.
More top news
New research has found #Brexit was the most commonly occurring hashtag for abusive tweets.
Leader Paul Nuttall said: "We cannot be cowed or allow our way of life to be undermined by those who wish to do us harm."
Ouarzazate in Moroco is all about the movies and half the city's residents work in showbusiness.