UPDATE: CNN reports that the Twitter account was hacked by ISIS supporters:

We can confirm that the U.S. Central Command Twitter account was compromised earlier today. CENTCOM is taking appropriate measure to address the matter, a defense official told CNN.

The account has since been suspended.

The Twitter account for the U.S. Central Command appears to have been hacked by someone claiming to be a member of ISIS.

BuzzFeed News adds that their YouTube account has been hacked, as well. We will update this situation as it develops.