A law enforcement source says Vance Boelter was arrested Sunday evening. Boelter allegedly posed as a police officer early Saturday and shot and killed former Minnesota House Speaker Melissa Hortman and her husband and wounded a senator and his wife.

Authorities are investigating reports of "targeted shootings" in suburban Minneapolis in what Minnesota Gov. Tim Walz said was an "ongoing situation." The shootings were in Champlin and Brooklyn Park, two neighboring cities about 10 miles from downtown Minneapolis, Walz said Saturday morning.

Boelter had also been a member of the Governor's Workforce Development Council in 2016 during the administration of then-Governor Mark Dayton.

U.S. Senator Amy Klobuchar (D-MN) released a statement Saturday in the wake of a "politically motivated" shooting of Minnesota state lawmakers, which left State Rep. Melissa