Ferguson grand jury reaches decision on Mike Brown shooting CLAYTON, Mo., Nov. 24 (UPI) -- A decision is expected Monday from the grand jury investigating the Aug. 8 shooting of Michael Brown by Ferguson police officer Darren Wilson. St. Louis County Prosecuting Attorney Robert McCulloch will hold a press conference Monday afternoon, either at 4 p.m. or 7 p.m., according to a source speaking to Bloomberg. Missouri Gov. Jay Nixon is also preparing to speak. Sources close to the process said the grand jury has reached a decision after weeks of testimony, more than three months after the shooting that sparked weeks of protest and set off a nationwide conversation about police use of force and the tense relationship between law enforcement and the African-American community. Sources close to Wilson, who took the unusual step of testifying before the grand jury, have said the officer was defending himself. They say Brown, 18, went for Wilson's gun and later charged at him. Witnesses who spoke publicly in the days and weeks after the shooting said they saw Brown raise his hands in apparent surrender before Wilson fatally shot him. Law enforcement sources are bracing for unrest no matter the grand jury's decision. Protesters say they are planning a peaceful shutdown of the business district of Clayton, where the grand jury is meeting. Nixon declared a state of emergency last week and activated the National Guard.