The Sherman County Sheriff Office executed a search warrant at 419 West 16th Goodland Kansas on May 23rd 2013.  The search warrant resulted in the arrest of Michael Robben.  Michael Robben was charged with Sexual exploitation of a child.  A bond of $250,000 has been set by the Sherman County District Court.   The investigation is ongoing and came about because a concerned citizen brought attention to law enforcement of a computer that may contain child pornography.  If you have any information please contact the Sherman County Sheriff Office.  Please note that all accused are presumed innocent until proven guilty.