Hundreds of law officers fanned out across a Minneapolis suburb Saturday in pursuit of a man who authorities say posed as a police officer and fatally shot a Democratic state lawmaker in her home in what Gov. Tim Walz called “a politically motivated assassination.” Authorities said the suspect also shot and wounded a second lawmaker and was believed to be trying to flee the area. Democratic former House Speaker Melissa Hortman and her husband, Mark, were killed in their Brooklyn Park home.