Vance Boelter, 57, has been charged in the shootings of two Minnesota lawmakers and their spouses. The Hennepin County Attorney said Monday that her office intends to pursue first-degree murder charges against him as well.

Minnesota law enforcement provides details about the investigation into shootings that killed a lawmaker and her husband and left injured a lawmaker and his wife.

After the man suspected in the killing of state Representative Melissa Hortman and her husband, Mark, faces federal and state charges, Minnesota Attorney General Keith Ellison tells MSNBC’s Lawrence O’Donnell that the suspect is going to be held accountable for his “crimes against both the people of the United States and the people of Minnesota.