Minnesota shooting suspect Vance Boelter expected to face federal charges: Sources

[Ocelot II]

13. State and federal charges can be brought against the same person

at the same time; one doesn't supersede the other. I don't know yet what the feds might charge him with, maybe firearm violations, but murder isn't a federal crime unless the victim is a federal official, so he will be charged (and already has been) with murder under state law. Derek Chauvin was tried in state court for George Floyd's murder and also pled guilty to a federal charge of violating Floyd's civil rights. Luigi Mangione was charged with the federal crime of stalking across state lines to commit bodily harm, as well as with the actual murder of Brian Thompson in New York state court and with other crimes in PA. Double jeopardy doesn't attach because of the dual sovereign rule - you can't be charged twice for the same offense by the same sovereign, but because the state and federal systems are separate sovereigns, you can be charged by both for a crime arising from the same act without violating double jeopardy.