(CNN) -- Prosecutors in St. Louis County, Missouri, are investigating a Twitter post claiming the grand jury hearing evidence in the Ferguson shooting hasn't heard enough to warrant charging the police officer who shot and killed unarmed teenager Michael Brown.
"The matter has been referred to the prosecuting attorney for investigation," said a statement from the St. Louis County court administrator. "The court will hear the matter and take appropriate action, if the prosecutor finds cause to believe misconduct has occurred."
The Washington Post first reported Wednesday that "an account of possible jury misconduct surfaced ... on Twitter when several users sent messages about one juror who may have discussed evidence in the case with a friend."