The Ministry of Defence have announced the soldier killed in action on Monday is Sapper Richard Reginald Walker from Leeds. He was serving with 28 Engineer Regiment, attached to 21 Engineer Regiment as part of the Task Force Helmand Engineer Group.
Sapper Walker was shot in an apparent 'insider attack' by a member of the Afghan National Army at Patrol Base Hazrat in the Nahr-e Saraj district of Helmand Province.
He was working on a construction task with other military engineers from his troop, as part of the preparations to hand the camp over to Afghan security forces, when the Afghan soldier turned his weapon soldiers at the base.
There were a number of casualties, all of whom were taken to a nearby medical facility where Sapper Walker was pronounced dead.
More top news
The remains of Hurricane Gonzalo will reach the UK on Monday night, bringing a period of strong winds and heavy rain to the UK.
An unsettled week with showers or rain and some very strong winds. There's a Met Office warning for gales as we head into Tuesday
Very windy today with gusts of 55mph, but nearer 70mph over the tops of the Pennines. Trans-Pennine routes could be treacherous