Vance Boelter is being held in the custody of U.S. Marshals as he awaits his first court appearance in federal court Monday afternoon. After being arrested late Sunday in a field in Sibley County, Boelter was booked into Hennepin County jail after being delivered by the Brooklyn Park Police Department just after 1 a.

Vance Luther Boelter, 57, opened fire on Mark Hortman as police pulled up, then exchanged gunfire and fled, investigators said.

A manhunt is underway for the gunman who was impersonating a police officer and had a list of possible targets, officials said.

Live updates: Rep. Melissa Hortman, husband assassinated; suspect Vance Boelter at large originally appeared on Bring Me The News. Melissa Hortman, the top Democratic lawmaker in the Minnesota House, was shot and killed in a suspected politically-motivated assassination along with her husband early Saturday.

Melissa Hortman, a Minnesota lawmaker who was gunned down in what is described as a politically motivated attack, earned degrees at Boston University and Harvard.

Murder charges have been filed against Vance Boelter in the suspected assassination of State Rep. Melissa Hortman and her husband Mark, with the 57-year-old also charged with the attempted murder of Sen.