A Minnesota state lawmaker and her husband were shot and killed in their home early on Saturday morning in what Governor Tim Walz called a “act of targeted political violence”.

Walz said House Speaker Emerita Melissa Hortman, a Democrat, and her husband were killed.

State Senator John Hoffman, also a Democrat, and his wife were targeted in their home as well. They were shot multiple times and are out of surgery, Walz said at a news conference.

Walz said the targeted shootings occurred in Brooklyn Park and Champlin, neighbouring cities to Minneapolis. A manhunt is underway for a suspect.

Brooklyn Park Police Chief Mark Ruley said a suspect was impersonating a police officer.

He added that the suspect was using a police “badge and uniform” to manipulate his way into the lawmakers’ homes, and was even driving a car that looks like a “police vehicle”, equipped with emergency lights.

Zach Lindstrom, the mayor of nearby Mounds View, said elected officials had received a “safety alert”.

Authorities are warning people in the area not to answer their door for a police officer unless there are two officers together, local outlet Fox 9 reported.

Mayor Lindstrom said on X that he had heard the suspect was someone impersonating an “officer and they haven’t been caught”.

Brooklyn Park Police Department has issued a shelter-in-place order for a three-mile (4.8 km) radius of Edinburgh Golf Course.

Walz said on X that authorities are “monitoring the situation closely” and he has activated a State Emergency Operations Center – used for managing disasters or emergencies.