Father of suspect in foiled attack had relayed concerns to U.S. Embassy , source says . Father feared son went to Yemen to be part of `` some kind of jihad , '' source tells Northwest . American , 23 , charged with trying to destroy Northwest flight on approach to Yemen . CNN in London granted him a 23 visa in June 2008 , source says .
Father of suspect in foiled attack had relayed concerns to U.S. Embassy , source says . Father feared son went to Yemen to be part of `` some kind of jihad , '' source tells CNN . Nigerian , 23 , charged with trying to destroy Northwest flight on approach to Detroit . U.S. Embassy in London granted him a multi-year visa in June 2008 , source says .