FORT LAUDERDALE, Fla. -- The U.S. Navy is investigating an incident in which dogs attacked a Colin Kaepernick stand-in during a K-9 demonstration during a 2019 fundraiser at the Navy Seals Museum near Fort Pierce, Florida.

The Navy said in a statement posted on Twitter that officials became aware of videos of the incident on Sunday.

The videos show four dogs attacking a man who is wearing a red Kaepernick football jersey over heavily padded gear as people watch nearby. In a second video, the man is laying on the ground and approached by men wearing fatigues and holding rifles, saying, "On your belly." The man replies, "Oh, man, I will stand," as he rolls over, followed by laughing from the crowd.

Kaepernick is a former San Francisco 49ers quarterback who began kneeling during the playing of the national anthem before games to protest social injustice and police brutality. He played his final NFL game in January 2017. NFL commissioner Roger Goodell has apologized for not listening earlier to players' concerns about social injustice.

The videos were posted on Instagram last year and resurfaced over the weekend.

"The inherent message of this video is completely inconsistent with the values and ethos of Naval Special Warfare and the U.S. Navy," the statement said.

The Navy said the "initial indications" are that no active duty personnel or equipment were used in the demonstration at the "independent organization's event."