Afghan soldier kills two U.S. soldiers in eastern Afghanistan

Two U.S. soldiers were killed Saturday after an Afghan army soldier opened fire on them in eastern Afghanistan, according to reports

Two other U.S. soldiers were also wounded in the attack, which took place in the Achin district. The attacker was also killed.

This is not the first such attack on US troops deployed in Afghanistan.

In March, three US soldiers were wounded after being shot at by an Afghan soldier at a base in Helmand province.

In October last year, an Afghan man in a military uniform shot dead a US soldier and an American civilian contractor inside a military base in Kabul before being killed.

Most foreign combat troops withdrew from Afghanistan at the end of 2014, 13 years after they ousted the Taliban from power, but about 13,000 NATO-led soldiers remain to help advise and train Afghan forces fighting a revived Taliban insurgency.