Iran's semi-official ISNA news agency is reporting that one person has died and several other people were injured when an air ambulance crashed in the north of the country.

The Wednesday report says the helicopter crashed after it collided with an electricity pole during landing, while on a mission to transport injured passengers to hospital in a mountainous area.

It says rescue teams have been deployed to the site of the crash.

Air accidents are not uncommon in Iran, and are often thought to be caused by aging aircraft and poor maintenance.

Mountainous areas in northern Iran often experience high winds, heavy rainfall and low visibility.