NEW : Camps appear dismantled , but about 50 to 60 migrants remain at one . Police are trying to shift migrants from makeshift camps near Calais . The French government has said it will not allow the migrant camp in Calais, which is home to more than 7,000 people, to be demolished and replaced by a new one. Calais is a magnet for migrants seeking to reach Britain or claim asylum in France .
NEW : Camps appear dismantled , but about 50 to 60 migrants remain at one . Police are trying to shift migrants from makeshift camps near Calais . The migrants do n't want to leave , wo n't take steps to tackle a scabies outbreak , authorities say . Calais is a magnet for migrants seeking to reach Britain or claim asylum in France .