Sergeant John Sheahan at the Las Vegas Metropolitan Police Department has described the gun fight which lead up to a huge crash which killed three people on a busy junction.
He said a "rolling gun battle" preceded the crash.
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The Duke of Cambridge is to end his role as an air ambulance pilot and become a full-time Royal, Kensington Palace has announced.
The UN released the before and after images and described the damage, reportedly caused by Islamic State, as 'a new war crime'.
The 16-year-old's body was found on January 16 on a pathway in Dinnington, South Yorkshire.