The Wiltshire Air Ambulance was stopped from taking a dying man to hospital last night after laser pens were shone at the pilot as he tried to land.
The man later died on the way to hospital in a road ambulance.
The pens were shone at the air ambulance as it tried to land in Calne, responding to calls of a man dying of a heart attack.
The helicopter had landed but took off again to burn off some fuel to carry the man to hospital. But, as it tried to re-land near King Edward Close, the pilot was faced with yobs shining laser pens and was forced to abandon.
The man was taken to Great Western Hospital, in Swindon, by road ambulance but is believed to have died before they arrived.
Police are now investigating the incident, anyone with information should call (0845) 4087000.