Many legal experts suspect that Mueller, who speaks only in court documents, has much more to say.

“Prosecutors never put all of their evidence into an indictment,” said Joyce Vance, a former U.S. attorney in Alabama and an NBC News contributor. “Just because this indictment doesn’t slap you in the face with a conspiracy doesn’t mean Mueller doesn’t have that evidence.”

Vance added, “Could this be the endpoint? Maybe, but this doesn’t look like a capstone indictment. It leaves too many un-pulled threads.”

Glenn Kirschner, another former federal prosecutor and NBC News contributor, went further:

“This is a conspiracy indictment,” he said. “He just left out the conspiracy charges.”