allegiance to the group's leader al baghdadi with a single tweet. now it's far from clear that the men were directed by isis leaders specifically or if they have been in direct contact with any of them. we'll begin our coverage with kyung lah live in phoenix where the suspects shared an apartment. i know we're getting more details about nadir sufi. >> reporter: he's the elusive one. wire trying to piece together what we know about him. we are learning through a source in pakistan who has knowledge about the family that he spent his formative years there. he went to a prestigious private school in islamabad. while in school he was a popular kid. he even had the lead in the music amp-- musical. then his parents divorced, and he came to the united states in 1998 with his mother. the divorce was not pretty. he struggled with it for some time according to the family friend. while here, as he started to