Brooklyn Park police Sgt. Rielly Nordan had just wrapped up his shift early Saturday morning when he heard that Champlin police were responding to a shooting at a home — and one of the victims was a state senator.

Minneapolis Police Chief Brian O'Hara says the actions of a Brooklyn Park police officer to get to the home of Melissa and Mark Hortman and engage with the alleged suspect, Vance Boelter, prevented more lives from being lost in Saturday's shootings.

State Rep. Melissa Hortman and her husband were shot and killed and State Sen. John Hoffman and his wife Yvette were shot and wounded in “targeted shootings” in Champlin and Brooklyn Park, two neighboring suburban cities 10 to 20 miles outside Minneapolis.

Surveillance footage captured an attempted murder, according to charges unsealed Sunday: A man wearing a mask, a blue shirt and police-style tactical vest with a badge knocked on a door in Champlin and announced himself as a police officer. He then entered the house and shot Minnesota Sen. John Hoffman and his wife.

State and federal officials announced charges, including murder, stalking and firearms offenses against Vance Boelter on Monday, who has been accused of assassinating a Minnesota state lawmaker and injuring another during multiple shootings.

Brooklyn Park’s chief of police says it’s not known if Vance Boelter has accomplices in the shooting of two Minnesota lawmakers, but it appears there were things put in place to give him resources to evade capture.

The City of Brooklyn Park has sent out photos of the suspected gunman - who has been identified as 57-year-old Vance Boelter - asking people to be on the lookout for him.

Fox News' Matt Finn reports the latest on Vance Boelter's arrest from Brooklyn Park, Minnesota.