Updated

Federal prosecutors say two North Carolina terrorism suspects plotted to kill U.S. military personnel and obtained maps of a Marine base in Virginia to plan an attack.

A superseding indictment returned Thursday against Daniel Patrick Boyd and Hysen Sherifi is the first time authorities have said the men had specific targets.

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Prosecutors said Boyd obtained maps of Virginia's Marine Corps Base Quantico to plan an attack.

Prosecutors have previously said the men went on training expeditions in the weeks leading up to their arrests in July, practicing military tactics with armor-piercing bullets on a property in rural North Carolina.

Seven men are awaiting trial in the case and investigators say an eighth suspect is believed to be in Pakistan.