From USA TODAY.

Authorities say a Minnesota lawmaker and her husband were killed and another lawmaker and his wife were injured at their homes by a person impersonating law enforcement in what Gov. Tim Walz called a “politically motivated assassination.”

Authorities are continuing to search for a shooter who dressed as a police officer, exchanged gunfire with officers and fled on foot, officials said at a Saturday morning news conference.

Walz said state Rep. Melissa Hortman and her husband Mark were shot and killed, and State Sen. John Hoffman and his wife Yvette were shot and wounded in “targeted shootings” in Brooklyn Park and Champlin, two neighboring suburban cities 10 to 20 miles outside Minneapolis.