German federal investigators say they're looking into a Duesseldorf bank account held by the father of the gunman who attacked an Orlando nightclub, and are in contact with their American counterparts.

Germany's Rheinischen Post reports Seddique Mateen posted the bank information in a 2013 video soliciting donations. The newspaper says the account is now closed and only received two payments, of 100 euros ($112) and 70 euros.

Mateen, the father of Omar Mateen, has multiple videos online in which he chats about Afghan political issues in Farsi. He calls himself the "Afghan revolutionary president" but isn't a known name in Afghanistan.

Federal Criminal Police Office spokeswoman Barbara Huebner said Wednesday that her office was investigating to see whether there was any relevance to the Orlando case, but refused further details.