Vance Boelter, 58, of Green Isle, Minnesota, was indicted July 15 on six counts of murder, stalking and firearms violations. The murder charges could carry the federal death penalty, though prosecutors say that decision is several months away.

Vance Boelter, the suspected assassin accused of gunning down two Minnesota lawmakers and their spouses, killing one couple, is expected to plead not guilty during his arraignment in federal court

Vance Boelter, the man accused of shooting two state lawmakers in June, killing one, entered the plea at a brief hearing in federal court in Minneapolis.