France has condemned the arrest in Switzerland of film director Roman Polanski, who has French citizenship. French Culture Minister Frederic Mitterrand said he had been stunned to hear about the arrest, and President Nicolas Sarkozy was following the case. Mr Polanski, 76, faces extradition to the US for having sex with a 13-year-old girl in Los Angeles in 1977. The Paris-born Polish filmmaker was detained in Zurich on Saturday as he travelled to a film festival.<br/> <br/>