The four Americans killed in a suicide attack in Syria have been identified as intelligence agents.
According to CNN, they were in Syria on an important mission.
Army Chief Warrant Officer Jonathan Farmer, 37, of Boynton Beach, Florida; Navy Chief Cryptologic Technician Shannon Kent, 35, and Scott Wirtz, a civilian Department of Defence employee from St Louis, died during the Wednesday attack in Manbij, northern Syria.
The fourth one was identified as contractor.
However, the Pentagon did not reveal his name and designation.
The United States believes the suicide attack was probably carried out by Islamic State, officials said.
The Manbij attack on US forces in Syria appeared to be the deadliest since the troops were deployed on the ground in 2015.
Shannon Kent joined the navy in 2003 and in her years of service received nearly one dozen honors.
Wirtz, a navy Seal for 10 years, had been employed by the Defence Intelligence Agency since 2017.
He completed three deployments for the agency in the Middle East.
A high U.S. military official told CNN, information on the presence of the intelligence agents in Manbij is being gathered, adding, only then something can be said finally.