Story highlights Gen. Neller condemned those who posted the photos to private Facebook groups

Neller said military culture must be examined

(CNN) The Marine Corps issued new social media guidelines on Wednesday, after recent revelations that nude and explicit pictures of female service members had been posted online without their permission.

As military leaders scramble to track down those involved in publishing the photos, new details emerged about further proscribed online activity.

The investigation has now expanded to at least a dozen spinoff pages that posted the lewd images, and the Navy is now looking at the possibility that those involved in the activity included sailors from aircraft carriers and at major naval bases, a Navy official said.

Marine Corps Commandant Gen. Robert Neller signed the new social media guidelines in order to clarify that the military code of justice punishments that apply to social media sexual harassment are the same as those that apply to all other forms of sexual harassment.

"Marines must never engage in commentary or publish content on social networking platforms or through other forms of communication that harm good order and discipline or that bring discredit upon themselves, their unit, or the Marine Corps," the guidelines state.

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