Story highlights The children are between ages 3 and 7

Authorities have an arrest warrant for the woman

Federal authorities say they are trying to find and arrest a woman who is posting videos of herself and a man having sexual contact with two children online.

The woman has produced videos showing a child between ages 3 and 5 and another one between ages 5 and 7, authorities said.

Federal authorities have obtained an arrest warrant in Washington D.C. for the woman, even though they do not know her name or what state she is from.

"Although her whereabouts are unknown, Homeland Security Investigations special agents investigating this case believe she lives somewhere in the United States," federal authorities said in a news statement.

The woman is described as between ages 25 and 35, having a medium build, dark brown hair, blue eyes and a large mole on the back of her left thigh.

Authorities have also released photos of the suspect.

Authorities found the videos while investigating an unrelated child pornography case.

The National Center for Missing and Exploited Children is also helping in trying to find the identities of the children.

Authorities are asking anyone with information about this case to call 1-866-347-2423.