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.

After a 43-hour search, Vance Boelter was arrested in rural Sibley County and charged with two counts of murder and two counts of attempted murder.

As federal and state murder charges were unveiled against Vance Boelter on Monday, the scope of his potential plans to assassinate state lawmakers and how