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Japan student swept over Niagara Falls

16 August 2011 Last updated at 04:40 BST

A student from Japan is presumed dead after being swept over Niagara Falls on Sunday night.

The woman, in her 20s, climbed on to a pillar overlooking the Canadian side of the falls and slipped, police have said.

A Canadian tourist, Kari Wilson, described seeing the woman straddling the railing.

Doug Kane, Chief of the Niagara Parks Police, said accidents of this kind were ''pretty rare''.