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Washington mudslide death toll 'not simple' to calculate

28 March 2014 Last updated at 17:27 GMT

The number of fatalities in a mudslide in Washington state will rise "substantially" in the next two days, authorities say.

Sixteen bodies have been recovered and at least 90 people remain missing after the 177ft (54m) wall of mud hit the town of Oso, north of Seattle.

Local fire chief Travis Hots defended the delay in releasing a specific death toll saying: "there are processes we are going through".

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