Apr.5 (GMM) Max Mosley has now commenced legal action against the British tabloid newspaper News of the World.



A spokesman for F1's governing body, the FIA, said: "Lawyers representing Mr Mosley have today served proceedings against the News of the World claiming unlimited damages."



The confirmation comes amid further details about the investigation that resulted in the News of the World report, in which the FIA president was depicted in video with five prostitutes.



Germany's Bild newspaper reveals that the footage was captured by two prostitutes who each wore tiny 'pin cameras' that were about the size of a match.



The investigation, that reportedly went on for seven weeks and may even have involved telephone and computer surveillance, was conducted by a specialty British agency, and the primary client may not yet be known.



It may, however, essentially be irrelevant for Mosley, whose support base is continuing to erode.



In the wake of several manufacturers and national bodies, America's AAA (American Automobile Association) joined the dissenting chorus.



"After careful consideration, AAA has conveyed to Mr Mosley that it would be in the best interest of all concerned if he were to step down," managing director for public relations, Yolanda Clark Cade, said in a statement.



Renault team boss Flavio Briatore was asked for his thoughts on the scandal by the Spanish press in Bahrain.



"At my age, I cannot talk about sex," he joked.



"Seriously, this is a matter for the FIA to decide. For me, this is not interesting or funny. We are here to talk about motor racing."