Vance Boelter is accused of posing as a police officer and fatally shooting former Democratic House Speaker Melissa Hortman and her husband, Mark, in their home early Saturday in the northern Minneapolis suburbs. Authorities say he also shot Sen. John Hoffman, a Democrat, and his wife, Yvette, at their home in a nearby neighborhood.

Officials say that 57-year-old Vance Boelter allegedly shot and wounded state Sen. John Hoffman and his wife, Yvette, at their Champlin, Minnesota residence.

Authorities first encountered Boelter outside of Hortman’s home, where they found inside his vehicle “No Kings” protest flyers, and a notebook with 70 listed names of lawmakers, all of whom were Demo...