Two-dozen explosive railway detonators are among equipment stolen from an Ashburton railway yard.
Police say a large quantity of equipment, including 24 railway detonators, a fire extinguisher and a hand held communications radio were taken from the yard sometime between Wednesday afternoon and Thursday morning.
Police are warning whoever took them that the detonators are dangerous.
"They are pressure detonators, so when a train runs over them, they explode as a warning," says Senior Sergeant Matt Emery.
"Our concern is if these items are found by someone who doesn’t understand what they are, they could cause serious injuries."
The detonators are round, orange and marked as "Explosive".
Anyone with information is asked to call Ashburton Police on 03 307 8400 or Crimestoppers anonymously on 0800 555 111.