I haven't pulled a statute, does NC require a grand jury indictment for a murder one arrest? We may not see him arrested for awhile, but he is not going anywhere.
And if they are going to put pressure on EB and AB to start spilling their guts this is a high pressure time for them to do so. It may be very strategic on their part that he is out. They know it annoys EB, and maybe it makes him more confident.
They can arrest without indicting but they have to indict him to charge him. They arrested EB for obstruction of justice but seeked an indictment from the Grand Jury before charging her.
All but two states and the District of Columbia use grand juries to indict. Twenty-three states (Alabama, Alaska, Delaware, Florida, Kentucky, Louisiana, Maine, Massachusetts, Minnesota, Mississippi, Missouri, New Hampshire, New Jersey, New York,
North Carolina, North Dakota, Ohio, Rhode Island, South Carolina, Tennessee, Texas, Virginia and West Virginia) plus the District of Columbia require that indictments be used to charge certain crimes.
These states tend to follow federal practice, requiring that indictments be used to charge serious crimes and allowing other charging instruments, such as informations and complaints, to be used to bring charges for minor felonies and misdemeanors. Informations and complaints are like indictments in that they charge particular persons with committing crimes, but unlike indictments, they are initiated by a prosecutor acting without the assistance of a grand jury.
http://campus.udayton.edu/~grandjur/stategj/funcsgj.htm