Kidnappers in video posted online
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Nigeria hostages death claims investigated

10 March 2013 Last updated at 07:41 GMT

Diplomats are investigating claims that seven foreign hostages seized last month in Nigeria have been killed.

A statement posted on the internet from Nigerian militant group Ansaru said it had killed the hostages.

The hostages - from Britain, Greece, Italy and Lebanon - were seized in the northern state of Bauchi.

Richard Lister reports.