 The transfer of money from the Americans via Istanbul and Budapest to Vienna was also one of the reasons why the group's Gestapo found out.Some members of the group were gradually arrested in February 1944 after being betrayed.Heinrich Maier was arrested on March 28, 1944 by the Gestapo in his parish in Vienna-Gersthof in the sacristy after the holy mass and taken to the prison in the former Hotel Métropole on Morzinplatz.