simpson said he was not surprised to hear simpson's name connected to the texas attack. >> he had express eded to me admiration specifically for osama bin laden. he used the word hero which surprised me at the time but now i understand his thinking better actually not that surprising. >> reporter: we are also learning more about simpson's accomplice nadir soofi. according to "the wall street journal" he bought an ak-47 on craigslist. soofi's mother says her son had dvds of the prechgs of the former leader of al qaeda in yes, ma'am yemen. and we learned today from the fbi direct james comey that fbi agents saw simpson's social media activity talking about the texas event, and that is what prompted that warning. but he said the fbi had no idea simpson was driving from his home here in phoenix with his accomplice to launch that attack in in texas. wolf? >> all right, pamela thank you. let's get more now on the fbi warning to the texas police