but cannot rule out that he left the area. >> our understanding is that he knew the individuals that he allegedly killed today. do you know now though whether he is armed? >> well, we believe he is. we're telling the public for their safety, that we're considering him to be armed and dangerous. if they happen to encounter him or have information about him, the best thing they can do is contact their local state police or talk to 911 immediately. >> thank you for your time tonight. we hope that you find him and others are safe. quickly. the unrest over the ferguson grand jury decision. students across the united states walked out today to protest the decision not to indict officer darren wilson. protesters appointment to eyewitnesses accounts. here's the thing. eyewitness accounts in this case differed dramatically. i mean, gave completely different pictures about what