A U.S. service member died in a non-combat related incident in Erbil, Iraq, on Monday, defense officials announced.

The cause of death remains under investigation, but COVID-19 “is not suspected,” according to a news release from Operation Inherent Resolve, the U.S.-led mission in Iraq and Syria.

No further information about how the service member died was immediately available, the news release said.

The service member’s name is being withheld pending next of kin notification.