Person of interest detained in the killing of LA County deputy

ABC News' Will Carr and former FBI agent Brad Garrett explain the new details from law enforcement about the deadly ambush of a Los Angeles County Deputy Sheriff. WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #news #losangeles #police #abcnews