What we know about Alex Pretti’s fatal shooting in Minneapolis

Video appears to show a federal officer taking a gun away from a Minneapolis man prior to a Border Patrol agent fatally shooting him. The man has been identified as Alex Pretti, a 37-year-old who sources say worked as an ICU nurse. Police have said he’s believed to have been a lawful gun owner with a permit to carry. CNN’s Josh Campbell breaks down what we know so far.