The U.S. attorney 's office in New Jersey said the investigation of the two men began with a tip to the FBI -- from someone who knew them -- in October 2006 . He denied for two men accused of planning to join a terror group . The two were arrested at an airport on June 6 . The FBI was watching the two suspects since May .
He denied for two men accused of planning to join a terror group . The two were arrested at an airport on June 6 . The FBI was watching the two suspects since May .