Afghan kills two U.S. trainers

KABUL, Afghanistan – An Afghan soldier posted outside a prison being revamped to house Afghans transferred from Guantanamo Bay killed two of his American military trainers Sunday, a U.S. spokesman said.

The gunman was shot dead by other Afghan troops at Pul-e-Charkhi prison, some 20 miles east of Kabul, said Maj. Sheldon Smith, a spokesman for Combined Security Transition Command, which trains Afghan security forces. The shooter also wounded two U.S. soldiers.

The four American soldiers were working as mentors to Afghan troops providing external security for the prison, Smith said.

U.S. and Afghan authorities were trying to determine the motive for the attack, Smith said.

The victims were not identified.