Germany's Bild newspaper first reported the case, publishing an interview with the suspect Friday in which he is quoted as denying involvement in any killings.
But, he acknowledged, "when one of the criminals caused a disturbance I reported him, then he was picked up and taken to a special camp. Sometimes I never saw them again but I also never asked any questions."
German authorities are currently investigating about 30 former Auschwitz guards under new legal thinking that anyone who served in a death camp, whose sole purpose was to kill, can be prosecuted as accessories to murder.
That argument has not been successfully expanded to include guards at concentration camps like Dachau, where tens of thousands died but whose purpose was not solely killing.
In this case, that means that prosecutors will have to find sufficient evidence of a specific crime before they can file charges.
Zuroff would not give specific details on the information the Wiesenthal Center received, but did say it was an "allegation of the commission of a serious crime."
In Bild's story, the newspaper printed a photo collage they said was on the wall of the man's apartment southeast of the German capital. It was labeled "Mein Kampf" the same title as Adolf Hitler's notorious book and included photos showing him in uniform.
He was also quoted as saying he joined the SS because he "was told that it was fun."
Steltner said it was not clear how Bild learned of the case, and Zuroff said the Wiesenthal Center had been hoping not to publicize it until the investigation was farther along.
"The information did not come from us," Zuroff said. "I wanted to give the prosecutors a chance to do the right thing."