PHOENIX (AP) -- A June 3 trial has been set for an Oklahoma man accused of mailing an inoperable homemade bomb nearly a year ago to Maricopa County Sheriff Joe Arpaio.
Gregory Lynn Shrader, 55, of Jay, Okla., has pleaded not guilty to the charges against him.
Investigators say the bomb was discovered in April at a mail collection-box unit in Flagstaff and was made of smokeless powder, wires, a battery and a pressure-release switch attached to its lid.
Authorities eventually determined the bomb was inoperable, though black power inside the parcel could have exploded or ignited in a flash fire.
Police disabled the bomb.
Authorities say a woman told them that she drove with Shrader to northern Arizona and saw him place the parcel into the mail box wearing surgical-type gloves.
© 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.