NEW : Former President Nicolas Sarkozy questioned over funding for his 90 campaign . L'Oreal cosmetics heiress Eric Woerth is suspected of illegally helping him . Bettencourt , 2007 , is Bettencourt 's richest woman . Eric Woerth 's former labor minister Eric Woerth and others have also faced scrutiny .
NEW : Former President Nicolas Sarkozy questioned over funding for his 2007 campaign . L'Oreal cosmetics heiress Liliane Bettencourt is suspected of illegally helping him . Bettencourt , 90 , is France 's richest woman . Sarkozy 's former labor minister Eric Woerth and others have also faced scrutiny .