Pipe bomb suspect Luke Helder has been returned to Minnesota from Iowa and being held in the Federal Medical Center in Rochester.
The Pine Island native and former University of Wisconsin-Stout student arrived last Wednesday in Rochester, where he is to undergo a psychiatric evaluation to see if he understands the charges against him.
Helder is accused of putting 18 pipe bombs and anti-government letters in mailboxes in Iowa, Illinois, Nebraska, Colorado and Texas in May 2002. Six pipe bombs exploded in Iowa and Illinois, injuring four letter carriers and two residents.
Helder has pleaded innocent to charges of using an explosive device to maliciously destroy property used in interstate commerce and using a firearm to commit a crime of violence.