There has been a bomb scare at Christchurch Airport early this morning.

A police spokeswoman said a person called police at 4.30am to say they had heard a group of people "talking about a bomb".

Airport police checked the airport but nothing was found.

The spokeswoman did not know if the group of people alleged to have made the comment were found.

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Christchurch Airport communications manager Yvonne Densem said referred New Zealand Herald enquiries to police.