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Right now, the details are sketchy:

(CNN) -- At least seven people are dead and between 12 and 15 wounded in shootings at Fort Hood in Texas on Thursday, senior Pentagon official told CNN.

Two shooters were involved in the incident, and one has been apprehended, Fort Hood spokesman Sgt. Maj. Jamie Posten told CNN.

"At this point we're looking for the other shooter." Asked for a description, he said, "we're trying to develop that information."

On the Fort Hood Web site, the word "closed" is posted with the statement, "Effective immediately, Fort Hood is closed. Organizations/units are instructed to execute a 100 percent accountability of all personnel."

Fort Hood was asking people on post to stay away from windows, CNN affiliate KXXV said. The