The suspect, identified by authorities as Vance Luther Boelter, posed as a law enforcement officer to gain access to the victims' homes.

The Minnesota Department of Public Safety is holding a news conference on the search for Vance Boelter from the State Emergency Operations Center in Blaine

The Minnesota Department of Public Safety is holding a news conference on the search for Vance Boelter from the State Emergency Operations Center in Blaine.

An armed Vance Boetler was spotted in military gear in the Green Isle area Sunday night. Authorities are asking people to shelter in place.

A massive law enforcement operation is ongoing as authorities search for Vance Boelter, the 57-year-old man suspected of the politically-motivated killing of Minnesota Rep. Melissa Hortman and her husband,

Sources tell ABC News that authorities have found a "vehicle of interest" outside Minneapolis, along with "personal items" believed to be associated with him.

Authorities are searching for a 57-year-old man after two Democratic lawmakers and their spouses were shot. State Rep. Melissa Hortman and her husband were killed.

Minnesota Gov. Tim Walz said the killing of Rep. Melissa Hortman and wounding of Sen. John Hoffman appeared to be a "politically motivated assassination."