Northern Constabulary are still attempting to trace all next of kin and said that until this has been done there will be no further information issued.
Three people have now died after the avalanche in Scotland's Cairngorm Mountains.
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A man has been shot dead in Waringstown, County Down.
It is understood the victim, believed to be a loyalist, was shot close to a petrol station forecourt.
The Sussexes have faced mounting criticism after previously being outspoken on environmental issues.