Federal prosecutors on Tuesday are expected to a grand jury indictment against Vance Boelter, the man accused of shooting two Minnesota state lawmakers and their spouses.

Vance Boelter, who is suspected of shooting two state lawmakers, voiced concerns on conditions at the Sherburne County Jail, which is already under scrutiny.

Acting U.S. Attorney Joseph H. Thompson said the indictment includes a "notice of special findings," which he says is the first step in seeking the death penalty.

The contents of a letter Vance Boelter wrote to the FBI was released Tuesday along with a search warrant and six-count indictment charging Vance Boelter with stalking and fatally shooting DFL lawmaker Melissa Hortman and her husband, Mark, at their home June 14.

A grand jury indicted the 57-year-old Tuesday after he embarked on ‘a murderous rampage targeting Minnesota’s elected officials and their families’