it is a way to connect dr. ivinsto that crime, to the location where the letters were mailed. >> narrator: at fbi headquarters, they had something they believed was even stronger- - they thought they had caught ivins intentionally misleading them about the alleged murder weapon, rmr-1029. >> it just showed us his willingness and deliberate attempt to mislead us, and actually tell us mistruths. >> narrator: the fbi had found matches between the anthrax in the letters and one particular source. >> samples start coming back positive. and all of those samples that turn out positive have all been drawn up originally from bruce ivins' 1029 flask. >> narrator: but the sample bruce ivins gave them from rmr- 1029 did not match. to investigators, it was proof ivins was trying to mislead them. >> this is the only one we know of that wasn't right, that didn't come back to what it was supposed to be. >> and so, they instantly began to wonder if this wasn't an attempt to obscure the fact that rmr-1029 was the source of the anthrax

hypothetically somewhat of dr. ivins' skills could have had the envelope with him and could have loaded the spores into the letters come sealed them with the tape, they were sealed tightly with tape kaput timoney ziploc bag and a walkout. >> forgive me if this is false information but i did read the following after the reunited states anthrax leaders attack there were some or there was a letter found in and chile. is that connected to bruce ivins attack or is that completely false information? >> there are a lot of letters that chile with a number of the country that were hoax letters. there was no other letter in any part of the world that contained this unique batch of anthrax either mainstream, lie of anthrax spores of any kind were certainly anthrax with spores that were derived from this. >> the one that people have the letters sent to them least with anthrax, why were they specifically targeted by bruce? >> that's a great question and i should point out that there were four letters the were recovered. appears there

doctor ivins was a sole perpetrator am also concerned about two of the issues for icing out of anthrax investigation. first and respond to press accounts, threatening the government's case against dr. ivan can't give you and the department of justice does allow flying agents and attorneys be interviewed on national television. pay attention to this because this is another inconsistency between congressional oversight and with the fbi and justice department is willing to do for other people under other circumstances. despite his full and public access to the press that they have given fbi agents on national television, the department has denied access to laying agents as part of our investigation into ats operation fast and furious. now, how do you square that inconsistency? i want to know from director mueller why he allows laying agents to provide detailed interviews to the press on national television but repeatedly refuses to let the congress and the stat interview lined agents and attorneys. second, i want to know why the department of justice declined to prosecute the individual that leaked information about the information. that would cost american taxpayers nearly $6 billio