According to the article, this was over 15 hrs ago. Why no more details, yet?
Nothing else new except all roads are apparently back open.
Here’s a link to watch:
http://news.google.com/news?&rls=en&ie=UTF-8&oe=UTF-8&um=1&tab=wn&q=TUCSON+%2B+EXPLOSIVE+DEVICE&scoring=n