Vance Luther Boelter is the primary suspect in the deaths of Minnesota state Rep. Melissa Hortman and her husband Mark.

Authorities arrested and charged Vance Boelter on Sunday night after he allegedly shot and killed House Democratic leader Melissa Hortman and her husband in their Brooklyn Park home and shot and seriously injured state Sen.

Vance Luther Boelter, 57, was arrested on Sunday for allegedly killing a Minnesota Democratic state lawmaker and her husband while posing as a police officer, Governor Tim Walz said.

Investigators found a cowboy hat near the vehicle and were working to determine whether it belongs to Boelter.

The manhunt for the man suspected of shooting two Minnesota lawmakers and their spouses continues into Sunday, with sources telling ABC affiliate KSTP that his wife has been detained for questioning.

Vance Boelter manhunt: Emergency alert in Sibley County after vehicle found originally appeared on Bring Me The News. Items possibly belonging to suspected assassin Vance Boelter have been found abandoned in southern Minnesota, sparking an emergency alert for local residents.