WASHINGTON (AP) -- The Twitter site of the military's U.S. Central Command was taken over Monday by hackers claiming to be working on behalf of the Islamic State militants. American and coalition fighters are launching airstrikes against IS in Iraq and Syria.

The site was filled with threats that said "American soldiers, we are coming, watch your back." Other postings appeared to list names and phone numbers of military personnel as well as PowerPoint slides and maps.

Front page of the U.S. Central Command twitter account after is was hacked. (AP Photo)

Military officials said they had no comment yet.

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