One other soldier was also injured in the incident but his injuries are not life threatening.
Just before 2100 hrs local time soldiers from the 2nd Battalion The Yorkshire Regiment, as part of their Operational Mentoring and Liaison Team (OMLT) role, were taking part in a foot patrol with 40 Commando Royal Marines near Kajaki, Helmand Province, when they were caught in an explosion.
Medical treatment was administered at the scene and both soldiers were evacuated to Camp Bastion by emergency response helicopter. Sadly one of the soldiers was pronounced dead on arrival.
Next of kin have been informed and there will be 24 hour period of grace before further details are released.