A young State Department employee was among the five Americans who died in a car bomb attacks in Afghanistan on Saturday.

NBC News reports Anne Smedinghoff, 25, three U.S. service members and a civilian Pentagon employee were killed in a car bomb attack in the Zabul Province.

Four other State Department employees were injured, one critically, NBC reports.

Smedinghoff's death is the first of an American diplomat while on duty since the Sept. 11, 2012 attacks on the Consulate on Benghazi, Libya, that claimed the life of Ambassador Chris Stevens.

A sixth American civilian working with the U.S. government in Afghanistan was killed in a separate attack on Saturday.

The identities of the civilian workers and the soldiers have not been released.