CEPIC director Bernard Mercier had numerous intelligence connections. Mayerus had been a co-founder of the Special Intervention Squadron (Diana Group), and was a shut acquaintance of Jean Bougerol, not to mention WNP associates Bouhouche and Wackenhut director Calmette. After his retirement Mayerus was suspected of having spied on the BOB in Brussels for EIM and to have recruited Bougerol into EIM.