After days of back and forth over President Trump's decision to pullout American troops from Syria.

A U.S. military official said, the process of withdrawal has begun.

He didn't give specifics, but a spokesman for the U.S. led coalition fighting the Islamic State group, said, "The process of our deliberate withdrawal from Syria" has started.

They said, "Out of concern for the operational security, we will not discuss specific timelines, locations or troop movements."

Around 2,000 troops were in Syria.