ST. LOUIS (AP) — A St. Louis County woman is denying she posted a claim on Twitter that a member of a grand jury told her the panel lacked evidence to prosecute the Ferguson police officer who killed 18-year-old Michael Brown.

The St. Louis Post-Dispatch (bit.ly/1rQTWsG ) reports that Susan M. Nichols of Affton said Thursday that her Twitter account was hacked.

A tweet posted Wednesday under Nichols’ name suggested that a friend serving on the grand jury reviewing Brown’s shooting said the panel lacked evidence to warrant criminal charges against the officer.

Nichols told the newspaper she had “talked to the authorities” about the matter.

County prosecutors said Wednesday they were reviewing the report.

A spokesman for Prosecuting Attorney Bob McCulloch could not be reached for comment Thursday by The Associated Press, and Nichols declined to comment.