Vance Boelter, 57, is in the Sherburne County Jail on Tuesday in Elk River, Minnesota, facing several federal and state charges for the shootings that killed a state representative and her husband, and wounded a state senator and his wife.

It’s not unheard of for state and federal prosecutors to both pursue criminal cases for the same offense, especially in high-profile matters.

What to know about man suspected of shooting two Minnesota lawmakers and their spouses, resulting in one couple dying.