The letter was opened in the governor's constituency services office in the tower at 1700 W. Washington St.
The powder is being analyzed at a state Health Department lab. The results of the tests should be released Wednesday.
Andrew Staubitz, chief of the Arizona Capitol Police, said it was common for state or federal police to assist on such an investigation.
"Obviously we don't have all the resources (of the FBI)," Staubitz said. "They do assist in those kinds of things. Using the mail is a federal issue."
Good luck finding the story outside the local reports and blogs even though it happened about 12 hours ago. Can you imagine if Governor Brewer had declared a Arizona a sanctuary state and then received white powder in the mail? The uproar? The outrage? The utter ALARM!??! Was this a TEA PARTY PERSON trying to stir up stuff again? After all they are So RADICAL.