Officer intervention likely prevented more deaths after suspect Vance Boelter allegedly killed state Rep. Melissa Hortman on Saturday, police chief says.

A massive search is stretching into its second day for a man who authorities say posed as a police officer and fatally shot a Democratic state lawmaker in her suburban Minneapolis home.

Minnesota Democrat Representative Melissa Hortman and her husband have died after they were shot at their home in Brooklyn Park early Saturday morning, Minnesota Governor Tim Walz said during a press conference.