Canadian police have say they have recovered 20 bodies from the Quebec train disaster, Reuters reports.
The number of people dead, or missing now stands at 50, a lower total than earlier estimates.
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The intervention of a candidate in a Canadian election by a former US president is extremely rare.
Negotiations look set to go down to the wire.
Negotiators have until dawn on Thursday to agree on a Brexit plan or it will not be debated at an EU summit, Mairead McGuinness has said.