WASHINGTON (AP) — David Gilkey, a veteran news photographer and video editor for National Public Radio, and an Afghan translator, Zabihullah Tamanna, were killed while on assignment in southern Afghanistan on Sunday.

NPR spokeswoman Isabel Lara says in a statement that Gilkey and Tamanna were traveling with an Afghan army unit when the convoy came under fire and their vehicle was struck. Two other NPR journalists traveling with them were unharmed.

Gilkey covered both national and international news for the radio network and its website and had made numerous trips to Afghanistan and Iraq, according to NPR's website.

His work has been recognized with numerous awards, including the prestigious George Polk Award and a national Emmy. The White House Photographers Association named Gilkey Still Photographer of the Year in 2011.