What followed was the arrest of the suspected Minnesota gunman, Vance Boelter, whom local, state and federal law enforcement had been trying to locate for about 43 hours. MORE: Chilling details emerge in Minnesota shootings as Vance Boelter faces federal charges: 'Stuff of nightmares' Boelter is accused of killing Democratic Minnesota state Rep.

Vance Luther Boelter, the man accused of killing a Minnesota lawmaker and her husband and injuring another couple, planned the attacks for months and had dozens of apparent targets, prosecutors said Monday.