American Army veteran dies in action in Ukraine

That's according to CNN, an Ukrinform correspondent reports.

Peters, 28, joined the International Legion of Defense of Ukraine, WSAW-TV reported. He served a tour in Afghanistan in 2014.

"Andrew had a strong sense of what was right and wrong. He felt the need to use his prior military combat skills to help the Ukrainian people fight and liberate their country. Andrew was extremely close to his fellow soldiers and was well-liked by everyone. We are all extremely proud of his bravery and selfless sacrifice," Peters' parents said in a statement, according to WSAW-TV.

"We can confirm the deaths of U.S. citizens in Ukraine," a spokesperson for the U.S. State Department told CNN on Friday. "We are in touch with their respective families and are providing all possible consular assistance."