WARNING-Graphic Footage: Austin Chief of Police Lisa Davis updates the public on the investigation into the attack. #fox #media #breakingnews #us #usa #new #news #breaking #foxnews #crime #crimenews #crimestory #criminal #police #terror #terrorism #texas #austin #lawenforcement #publicsafety #investigation #violence #security #pressconference #lisadavis Don’t just watch Fox News—be part of it. Become a Fox News Patriot today. https://youtube.com/foxnews/join Subscribe to Fox News: https://bit.