A gunman wearing an Afghan army uniform shot and killed a member of the U.S.-led coalition forces fighting in Afghanistan — the latest in a spate of insider attacks that are fracturing the trust between NATO and Afghan forces, according to The Associated Press.

Separately, officials said 11 Afghan civilians were killed by land mines on Sunday, Nov 11, in the east and south.

The UK Ministry of Defense confirmed that the insider attack had claimed the life of a British soldier from The Royal Scots Borderers, 1st Battalion The Royal Regiment of Scotland. It said the soldier was shot by an individual wearing an Afghan army uniform at his base in the Nade-e Ali district of Helmand province.

The defense ministry did not name the serviceman but said his next of kin have been informed.

Mohammad Zarak, spokesman for the governor of southern Afghanistan's Helmand province, said the shooting took place in Nad Ali district after an argument between an Afghan soldier and coalition service members.