WASHINGTON — The Pentagon said Monday it is notifying 100 military members that their names and addresses were posted on the Internet by a group calling itself the Islamic State Hacking Division.

The group said it was posting the information, including photos of the individuals, to encourage Muslims in the United States to kill the military members.

A Pentagon spokesman, Col. Steve Warren, said there is no indication that the information was obtained through a government data breach. He said it could have been gathered from public records and by searching social media accounts. Service members have been reminded to heed normal security precautions, including password protection, in using social media, he said.

Another defense official said there is no indication yet of a specific security threat to any of the 100 individuals. The official spoke on condition of anonymity because the official was not authorized to discuss on the record a matter under investigation.

Warren said that at least one of the individuals on the list is no longer in the military.

Warren said it’s not clear whether the group that posted the information is actually related to the Islamic State group whose fighters, buildings and military positions in Iraq and Syria have been bombed by U.S. and coalition aircraft.

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