A man suspected of assassinating a Minnesota lawmaker on Saturday and of shooting another was identified by the authorities as Vance Boelter, 57. He is also suspected of killing the spouse of one of the lawmakers and wounding the spouse of the other. Mr. Boelter was taken into custody on Sunday, according to three officials who were briefed on the situation.

Before the attacks, the suspect emptied his bank account, according to a federal law enforcement official. The suspect also gave four months’ worth of advance rent payments — about $220 a month — to David Carlson, who said he had been one of the suspect’s best friends since the fourth grade, for a small room in a shared house in Minneapolis. The suspect rented a room in the home and stayed there several days a week.

Here is what we know about the suspect’s actions during and after the shootings, based on information from the authorities and interviews by The New York Times, as a manhunt by law enforcement officials extended into Sunday night.

The Shootings

2 a.m. Saturday

According to an alert issued by the Champlin Police Department, officers responded at 2:07 a.m. to a report of gunfire in Champlin, Minn., at the home of State Senator John A. Hoffman. The officers found Mr. Hoffman and his wife, Yvette, wounded by gunshots. They were transported to a nearby hospital.