Ferguson, Missouri (CNN) -- The Missouri woman whose Twitter account publicized supposedly confidential information about the grand jury proceedings in the fatal shooting of Michael Brown says she didn't send the tweet and her account was "probably hacked." Prosecutors in St. Louis County are investigating a Twitter post claiming the grand jury hearing evidence in the Ferguson shooting hasn't heard enough to warrant charging Officer Darren Wilson in the death of the unarmed teenager. "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."
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NEW: Missouri woman says she did not send tweet about grand jury proceedings
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Investigation into police shooting of unarmed teen Michael Brown is complete, official says
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Ferguson police officer Darren Wilson shot and killed the 18-year-old on August 9
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A grand jury is expected to decide by next month whether Wilson will be charged
The @placeholder suburb of 21,000 erupted again last week after one of three Brown memorials at the site of the shooting burned.