The US National Transportation Safety Board has said it is investigating today's crash at Aspen airport in the state of Colorado:
NTSB investigating today's crash of a Canadair CL-600 in Aspen, CO.
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A fine start to Sunday but rain moves in from the southwest later on.
A second police officer has died after he and a colleague were shot as they scuffled with a suspect in Florida.
Thousands of demonstrators have marched through Boston in opposition to a right-wing rally in the city which was eventually cut short.