A U.S. service member died Tuesday in a non-combat related incident while deployed to eastern Afghanistan, according to a release from U.S. Forces-Afghanistan.

USFA did not release the the service member’s name, as the Defense Department releases names of deceased troops 24 hours after notification of next-of-kin.

US service member killed in apparent insider attack in Afghanistan The service member is the sixth American killed in Afghanistan this year.

The incident is under investigation, the release said. The service member’s death came a day after one American was killed and another wounded in a possible insider attack, also in eastern Afghanistan.

This brings to seven the number of U.S. troops who have died in Afghanistan this year.