Pentagon press secretary George Little says that it's not yet clear how many military casualties there were, or specifically whether they were killed or injured.
Marine Col. Dave Lapan, a Pentagon spokesman, says that initial indications are that the suspect in the shootings, James Holmes, was not a member of the military.
Holmes has been taken into custody in the deadly Denver-area shooting spree that killed 12 people and injured at least 50 others during a midnight showing of the movie Friday.
The FBI said there was no indication that the shooting is tied to any terrorist groups.
(Copyright 2012 by The Associated Press. All Rights Reserved.)