WATCH: Minnesota police release body camera video of deadly shooting of man carrying knife, charging

Authorities in Minnesota released body camera footage Tuesday showing the moment a man carrying a knife angrily charged at a police officer before he was fatally shot. St. Paul Police Officer Steven Mattson shot 31-year-old Ronald Davis on Sept. 15 during a confrontation that lasted less than a minute after Davis rear-ended his squad car. The Minnesota Bureau of Criminal Apprehension and St. Paul Police have said both men exited their vehicles and Davis confronted the officer, ignoring commands to drop the weapon until Mattson ultimately fired his gun, killing Davis.-- More...