U.S. Army Captain Bruce Kevin Clark, 43, died during a Skype video call with his wife on Monday. Clark was an army nurse stationed in Tarin Kowt, Afghanistan, supporting Operation Enduring Freedom at the time.

The circumstances surrounding his death are still unknown, according to CNN.

The army will be investigating the cause of death, according to William Beaumont Army Medical Center officials in El Paso, Texas. Clark was based in Beaumont with the A Company and Troop Command.

"We are entrusting the military with investigating and with finding out what happened to Capt. Clark," Bradley Taber-Thomas, Clark's brother-in-law told The Associated Press on Friday.

Clark's wife Susan witnessed her husband's death during a routine video chat.

"Although the circumstances were unimaginable, Bruce’s wife and extended family will be forever thankful that he and his wife were together in his last moments," the wife and family stated in an official statement.

U.S. and Australian troops lined up for his final send-off from Afghanistan, according to CNN. His body was flown to the Dover Air Force Base in Delaware. He was honored in a dignified transfer on May 3.

The Texas-based medic, originally from Addison, Mich., is a longtime resident of Spencerport, N.Y. Funeral services will be held in his Upstate New York hometown. A memorial service will be conducted in Addison, according to the El Paso Times.

Clark is survived by his wife and two daughters. Clark's family and friends have created a Facebook page honoring the army hero that is open to the public for comments.

Images courtesy of Facebook CPT Bruce Kevin Clark Memorial Page, U.S. Air Force Mortuary Affairs Operation