The Pentagon says 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 to encourage Muslims in the United States to kill the military members.

A Pentagon spokesman, Col. Steve Warren, said Monday 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.

Warren said it's not clear whether the group actually is 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.