At least 27 miners in Afghanistan were killed when a coal mine collapsed this morning.

The collapse occurred in the northern province of Samangan.

Rescue teams have recovered 27 bodies.  At least 22 more miners are injured.

District police chief Akram Behzad said all the trapped miners had been rescued.

Afghanistan is estimated to be have as much as $1tn in untapped mineral resources.

Decades of war and instability have kept most investors away.