The military is to carry out an investigation into why an army helicopter crashed in south Armagh.
It happened in Crossmaglen just before 1800 GMT on Sunday at Foxfield Road, near an army base and a housing estate.
Four police officers and two military personnel were taken to hospital. Three were later released after treatment. One is being treated for a back injury.
The cause of the accident is not yet clear, but police said there was no indication of any terrorist link.
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