Officials on Monday identified the American special forces soldier who was killed over the weekend in a combat operation against Islamic State extremists in Afghanistan.

Staff Sgt. Mark R. De Alencar, 37, of Edgewood, Maryland, was killed Saturday in Nangarhar Province, Afghanistan after his unit came in contact with enemy forces using small arms fire during combat operations, according to the Department of Defense.

RIP SSG Mark R. De Alencar, 37, of Edgewood, Maryland, died April 8 in Nangarhar Province, Afghanistan in combat 7SFG. @TB_Times pic.twitter.com/3isEYUpk7Y — Howard Altman (@haltman) April 10, 2017

De Alencar was assigned to 1st Battalion, 7th Special Forces Group located at Eglin Air Force Base in Florida, according to the DoD.

US SPECIAL FORCES SOLDIER KILLED IN AFGHANISTAN OPERATION AGAINST ISIS

The ISIS terror group has a growing presence in eastern Afghanistan, where it has battled both Afghan forces and the much larger and more powerful Taliban.

Insurgents killed at least 13 Afghan security forces in separate attacks, officials said Sunday.

Munir Ahmad Farhad, spokesman for the governor of the northern Balkh province, said a roadside bomb killed nine security forces and wounded several others the night before in the Chimtal district, where they were waging an ongoing operation against the Taliban. He said five insurgents have been killed and dozens wounded.

Fox News' Jennifer Griffin and The Associated Press contributed to this report.