Prime Minister David Cameron says he is 'deeply saddened' by news of the three soldiers killed in Afghanistan.
– David Cameron
I am deeply saddened by the appalling news that three British soldiers have been killed in Afghanistan. My heart goes out to their families. The suspected perpetrator is in custody and we will do everything in our power, with the Afghan National Security Forces, to ensure that justice is done. This tragic incident again demonstrates the very real risks that our brave soldiers face every day. We will do everything possible to find out how this happened, and learn any lessons for the future.