The Marine Corps is investigating two active-duty Marines at Camp Pendleton for a social media post of a photo of a corporal in uniform holding an assault rifle and the message: "Coming to a gay bar near you!"
Maj. Staci Reidinger said Thursday that fellow Marines alerted officials to the post, and authorities were able to track down the Marine in the photograph and another one who reposted it.
According to the Marine Corps Times, the post appeared on a private Facebook group for male Marines with the words "Too soon?" before the administrator deleted it and banned the person from the group. The administrator of the Facebook group could not be reached for comment.
Reidinger said it goes against Marine Corps values.
"This is a very serious incident and we see this as potential misconduct based on the fact in the picture is a US Marine and the person who reposted the picture also is a US Marine," she said. "This goes against good order and discipline within the Marine Corps and the Marine Corps has a very high standard of not tolerating discrimination against any type of group."
She added that fellow Marines policed their own by immediately reporting the post.
"It's an embarrassment to us," Reidinger said of the post.
The names of the two Marines will not be released unless the are charged, according to NBC News.
The post follows Sunday's terror attack on a gay nightclub in Orlando, Florida, that killed 49 people and injured more than 50.