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

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

Authorities arrested and charged Vance Boelter on Sunday night after he allegedly shot and killed House Democratic leader Melissa Hortman and her husband in their Brooklyn Park home and shot and seriously injured state Sen. John Hoffman and his wife in their home in Champlin.