Police were conducting a massive manhunt in Minnesota on Sunday for the gunman who killed a Democratic state lawmaker while posing as a police officer, a crime that Governor Tim Walz characterized as a "politically motivated assassination.

Minnesota state Rep. Melissa Hortman and her husband were killed, and state Sen. John Hoffman and his wife were wounded in politically motivated shootings early Saturday, Gov. Tim Walz said. Authorities have also identified a suspect who is still at large.

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.