Federal authorities arrested Vietnamese Vinh Ngo Nguyen on Friday . CNN 's Chelsea J. Carter contributed to this report . Nguyen , 24 , also is known as Hasan Omar Omar Omar , the FBI said . He was taken into custody as he was boarding a bus for Mexico , the FBI said .
Federal authorities arrested Vietnamese Vinh Ngo Nguyen on Friday . Nguyen , 24 , also is known as Hasan Omar Omar Omar , the FBI said . He was taken into custody as he was boarding a bus for Mexico , the FBI said .