A U.S. Army contractor who stabbed a man with a knife at Kandahar Airfield in Afghanistan pleaded guilty to assault Tuesday, federal officials said.

Sean T. Brehm, 44, of Capetown, South Africa, pleaded guilty to assault resulting in serious bodily injury before U.S. District Judge Anthony J. Trenga in Alexandria. The case is being prosecuted by the U.S. Attorney’s Office for the Eastern District of Virginia.

According to court documents, Brehm was working as a contractor for DynCorp International, a U.S. company that is a major contractor to the U.S. military, in Afghanistan.

On Nov. 25, Brehm got into an altercation with a man who worked for another contractor that was sparked by a “pre-existing personal dispute,” according to court papers. Brehm admitted he stabbed the man.

Sentencing is scheduled for July 8. Brehm faces a maximum of 10 years in prison.

Brehm was charged under the Military Extraterritorial Jurisdiction Act (MEJA), a statue that gives U.S. courts jurisdiction to prosecute crimes that occur outside the U.S.