News broke yesterday that St. Louis County officials are investigating the grand jury charged with deciding whether to indict Officer Darren Wilson in the killing of 18-year-old Michael Brown. Grand juries are sworn to secrecy but according to the Washington Post, activist and active Tweeter Shaun King informed the St. Louis County prosecutor’s office that at least one juror may be talking. Evidence so far is a snapshot of the following Tweets:

Speaking to the St. Louis Post Dispatch, Peter Joy, director of the Washington University School of Law’s Criminal Justice Clinic said, “This is in the realm of rumor and speculation. If I were a betting person, I would assume that this is just some person who made up something out of thin air.”

The St. Louis County prosecutor’s office is investigating. Protesters have been calling for county prosecutor Robert McCullough to be replaced.

Watch for more as this story develops.