Hours after the shootings of two Minnesota lawmakers over the weekend, authorities asked David Carlson to identify his lifelong friend in a harrowing photograph.Carlson says he had known and trusted Vance Boelter from the time the two played together as children.

Accused Minnesota assassin Vance Boelter's alleged plan to kill more politicians on his target list was foiled by a police sergeant's proactive hunch.

Heavily armed and dressed in tactical armor with a silicone mask hiding his face and a police-style badge, Vance Boelter made a convincing police officer – so much so that a real police officer mistook him for a fellow cop.

The suspect built a scattered career ranging from food to retailing to private security to pastoring, public records and his online postings show.

Minnesota Rep. Melissa Hortman and her husband were shot to death at their home early Saturday morning by a man disguised as police, officials said.