Investigators seek clues to cause of Kaikōura helicopter crash

A blessing has been held this afternoon at the site of yesterday's fatal helicopter crash near Kaikoura that killed a Christchurch couple and seriously injured three children. Andrew Davidson and his wife Lin Chen died in the crash. Their two children along with a schoolfriend, were dragged from the wreckage seriously injured and are recovering in Wellington Hospital. It comes as a team of investigators spent today combing the mouth of the Keke-rengu River for clues as to what might have caused the tragedy. In a moment we'll hear from the Transport Accident Investigation Commission but first this from Nick Truebridge. Meanwhile, the Transport Accident Investigation Commission is appealing for any witnesses who may have footage of the accident to come forward. The helicopter's components will be examined along with maintenance records. Simon Pleasants from TAIC says an investigation team has spent the day gathering evidence