[StillProud2BeFree]

My read of it is that Abu Hafs Masri is speaking about the Ricin that was found in the US Senate Office Buildings in February of this year, not the anthrax attacks.

Again, impossible to determine the credibility of the claim. I'm just the translator here :)

5. To the American Senate: pardon us for the disturbance of February 4, 2004, but we were obliged to a pardon on the disturbance a day of 4 - 2 - 2004, but we were obliged to try the substance (Ricin) on some people, and we will return to you, but the next time it won’t be for practice.

[swarthyguy]

IIRC, the ricin incident was denied by the powers that be, wasn't it?