 On 3 December 1973, agents of the DST, disguised as plumbers, were caught trying to install a spy microphone in the offices of the "Canard Enchaîné" newspaper.The resulting scandal forced Interior Minister Raymond Marcellin to leave the government.Reporter Marie-Monique Robin, author of a book investigating relationship between the Algerian War and Operation Condor, said to "L'Humanité" newspaper that "[the] French have systematized a military technique in urban environments which would be copied and pasted to Latin American dictatorships."