Here’s what we know about the 57-year-old charged with the murders of state representative Melissa Hortman and her husband and shootings of state senator John Hoffman and his wife.

Vance Luther Boelter, the man accused of killing a Minnesota lawmaker and her husband and injuring another couple, planned the attacks for months and had dozens of apparent targets, prosecutors said Monday.

Boelter, 57, was arrested at about 9 p.m. June 15. He is accused of shooting the two Democratic state legislators and their spouses in the early morning hours of June 14. The Minnesota State Patrol took him into custody in rural Sibley County, roughly 50 miles southwest of Minneapolis.