Law enforcement officers on Sunday night arrested Vance Boelter, who is accused of assassinating Rep. Melissa Hortman and her husband at their home in Brooklyn Park as part of a larger plot to kill Democratic elected officials and other advocates of abortion rights.

A manhunt is underway after the fatal shooting of Minnesota state Rep. Melissa Hortman and her husband overnight. State Sen. John Hoffman and his wife were also injured in what Gov. Tim Walz called "politically motivated" shootings.

A memorial of flowers, candles, and handwritten notes lined the steps of the State Capitol in Minneapolis on Sunday in tribute to former Minnesota House Speaker Melissa Hortman and her husband Mark after they were killed in a shooting at their home.

Authorities asked for the public’s help in finding Vance Boelter, 57, and South Dakota officials are seeking a ‘person of interest’ who may be traveling with him.

State Rep. Melissa Hortman and her husband were killed, and state Sen. John Hoffman and his wife were injured, in what officials called a targeted attack.

Authorities searched a vehicle on a rural road outside Minneapolis on Sunday that they believe had been used by the man wanted in the shootings of two Democratic lawmakers, as a state on edge struggled to make sense of the brazen political violence that left one leader dead.