Federal law-enforcement officials will go first in prosecuting Jared Lee Loughner on charges related to the January 8 shooting rampage in Tucson that killed six people and wounded 13, including Rep. Gabrielle Giffords, D-Ariz.
The announcement about Loughner, 22, of Tucson, was anticipated; he is currently in federal custody.
Loughner faces a three-count indictment in Federal District Court for the District of Arizona that includes the charge of attempted assassination of a member of Congress. Indictment on that particular charge requires the suspension of all state or local prosecutions while the federal case is pending.
Once Loughner has been prosecuted in federal court, Arizona state charges will be prosecuted by the Pima County Attorney's Office.
“These cases will be tried in sequence and will ensure that all rights of the victims and their families are vindicated,” the announcement from federal and Arizona authorities said.