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WASHINGTON (WUSA9) -- Monday, the Federal Bureau of Investigations posted this message on its Facebook page:

"Today is the 20th anniversary of the FBI's Innocent Images program. Please help us identify these unknown individuals from our Endangered Child Alert Program."

The FBI has posted some photos of "John Does" they want you to help authorities identify (http://www.fbi.gov/wanted/ecap).

n case, FBI agents are looking for John Doe 23 and John Doe 24, who may have critical information about the identity of a child victim in a sexual exploitation investigation. The FBI described John Doe 23 as a White male, between the ages of 25 and 35, with dark hair, glasses, and brown eyes. John Doe 24 is described as a White male, likely between the ages of 35 and 45, with dark hair, and brown eyes. The FBI released photos of both John Does as well as items connected to the case, including a yellow t-shirt with the outline of a basketball and the words "New Market Basketball" and a home with what appears to be yellow siding and an above-ground swimming pool.

In another case, the FBI believes John Doe 18 may be involved with child exploitation and the sexual abuse of a minor. He is described as a Hispanic or dark-skinned male, possibly in his 20s or 30s. He wears glasses, says the FBI. The also released photos of his watch and ring.

The FBI also says John Doe 19 may be involved with the attempted sexual exploitation of children and the sexual abuse of a minor. Photos of him were found on a video being traded on the Internet, say FBI officials.

John Doe 13 is accused of sexually abusing a young girl, say FBI officials. Images show him abusing her, according to the FBI. He is described as a White male, approximately 180 to 200 pounds, and balding with brown hair.

John Doe 17 may be involved with the transportation of child pornography online, according to the FBI. He is described as a White male, approximately 210 to 250 pounds, with curly brown hair.

Images show John Doe 13 sexually abusing a young girl, say FBI officials. He is described as a White male, approximately 180 to 200 pounds, balding with brown hair.

Images of John Doe 8 show him abusing a young girl, say FBI officials. The images were found in a video on the Internet in May 2005. He is described as a White male, approximately 180 to 200 pounds, with brown hair. He has a dark circular mark on his right forearm.

Images found on the Internet show John Doe 5 abusing young children, according to the FBI. He is described as a White male in his late 30s or early 40s with brown eyes. He has a large mole in the middle of his left cheek, say officials.

Take a look at the photos of the John Does described above (If you're using the iPad App, then click on the VIDEO button to view the gallery).

If you have any information about any of these cases, then please submit your tip to the FBI here: https://tips.fbi.gov/

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