The arrests continued. On 1 July , head of the Juggler Network, and , Suttill's de facto second in command, were arrested in a Paris cafe where Worms ate lunch every day. Over the next three months, hundreds of local agents associated with Prosper were arrested, of whom 167 are known to have been deported to Germany where about one-half were executed, killed, or died in concentration camps. The communists in the Paris suburbs with whom Suttill worked mostly survived the debacle because of their rigid security practices and their dependence on SOE only for arms and money, and not guidance and communications. The survivors of the Prosper Network were mostly in the sub-networks of Prosper scattered around northern France. One temporary survivor was newly-arrived wireless operator Inayat Khan who was not captured until 13 October. On 25 June, an agent in Paris radioed SOE headquarters in London that Suttill, Norman, and Borrel "had disappeared, believed arrested." Thereafter, there was radio silence from Paris about the fate of Suttill until 7 July when a message from Gilbert Norman's radio arrived in London. The message confirmed that Suttill had been captured, but apparently Norman was still at large and transmitting. However, the message was strange. It was distorted, but that could have been caused by atmospheric conditions. The style of transmitting, the "fist," was different than the usual for Norman, and, most importantly, both the "bluff" and "true" checks were missing from the message. These checks were spelling mistakes or phrases deliberately inserted into a message by a wireless operator to prove that it was indeed he or she who was transmitting. The absence of the checks in a message meant the operator or the radio, or both, were under the control of the Germans and transmitting under duress. Norman had a high reputation for efficiency and character and SOE's French section leader, Maurice Buckmaster, refused to believe that he had been captured. He sent back a message to Norman's radio saying, "You have forgotten your double security check. Be more careful next time." Buckmaster had inadvertently told the Germans how to transmit messages to SOE which would be accepted as genuine. Josef Goetz was the wireless expert at 84 Avenue Foch in Paris, the headquarters of the Sicherheitsdienst (SD), the security service of the German SS. When wireless operator Gilbert Norman was captured on June 23, the Germans also captured his wireless set. With this wireless, and others soon captured, including that of Noor Inayat Khan, and after Buckmaster's blunder on July 7, Goetz was able to play radio games ("funkspiel") with SOE headquarters.