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Names of 9/11 victims read out at Ground Zero

11 September 2011 Last updated at 16:40 BST

Relatives of the victims of the 9/11 attacks have begun reading out the names of all 2,983 people who were killed.

The ceremony is expected to last four hours.

Each read out several names, ending with the name of the person they lost.

BBC News: 9/11 Ten Years On