A massive search was 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, an act Gov. Tim Walz called “a politically motivated assassination.

Authorities identified the suspect as 57-year-old Vance Boelter, and the FBI issued a reward of up to $50,000 for information leading to his arrest and conviction.

A day after police say a gunman killed a Minnesota state lawmaker and her husband, plus wounded another lawmaker and his wife, suspect Vance Boelter remains on the run.