During the tour, the group's guide noticed he was urinating and quickly alerted the police, who detained him for questioning.
In his interrogation, the Polish report said, he admitted to committing the act and said he would accept any punishment levied on him.
The Foreign Affairs Ministry added he was released after being questioned for several hours.
Comment provided by Auschwitz said, "Yesterday at the site of the former Auschwitz II-Birkenau site, a young person from Israel was indeed spotted urinating while standing on the monument that commemorates all victims of the camp.
"The monument is located between the ruins of the gas chambers and crematoria II and III. This extremely sad and disturbing incident was immediately noticed by our staff and other visitors. Our security intervened and police was called."