Minnesota State Rep. Melissa Hortman, State Sen. John Hoffman and their spouses were all shot early Saturday in targeted attacks.

Lawmakers nationwide expressed shock and outrage over the shooting deaths of Minnesota state Rep. Melissa Hortman and her husband Mark, and the shootings of Sen. John Hoffman and his wife Yvette.

Melissa Hortman and her husband, Mark, were killed by an individual impersonating a police officer. Hortman was the former speaker of the Minnesota House of

Selfless, humble and full of grit -- that was the Melissa Hortman that Minnesota lawmakers grew to love over two decades in the statehouse.

A golden retriever that belonged to Melissa Hortman, the Democratic Minnesota lawmaker shot and killed at her home in what was described as an "act of targeted political violence," was also shot during the attack and reportedly euthanized.

Minnesota authorities say they plan to charge 57-year-old Vance Boelter with first degree murder in connection to the shooting deaths of state Senator Melissa Hortman and her husband. NBC News' Shaquille Brewster reports that investigators are working to determine if others may have been involved.

State Rep. Melissa Hortman and State Sen. John Hoffman, who were targeted by a shooter on Saturday, were longtime members of Minnesota's state legislature.

Minnesota state Sen. John Hoffman (D) and his wife, Yvette, who were both shot in their home by the suspect who is believed to have later killed state Rep. Melissa Hortman (D) and her husband, Mark, in a “politically motivated assassination” on Saturday,