The man charged with killing one Minnesota lawmaker and wounding another in what prosecutors have described as a meticulously planned attack, had dozens of apparent targets, including officials in at least three other states.

Vance Boelter was captured in a wooded area on Sunday night, and charged in the shootings of two state lawmakers and their spouses. He appeared in federal court after being charged with murder.

It is no exaggeration to say that his crimes are the stuff of nightmare,” acting U.S. Attorney Joseph Thompson said.