officials tell me that those early field tests only confirmed that there were, quote a biological toxin consistent with ricin. another round of testing is underway in the state of maryland. shepard: there s another case i m learning in spokane? reporter: that s right. in the spokane case, the officials confirmed the arrest and charging of one man, matthew ryan buket with one count of mailing a threatening communication. one of the five letters mailed to judge veteran fred van sickle. he was charged with the offense of mailing a threat and not a banned substance. one official said i wouldn t say the charges are over. the spokane letters are believed to include another one sent to president obama, one sent to the