http://www.citypaper.com/blogs/the-news-hole/bcpnews-reasonable-enough-suspicion-on-curtis-deal-killed-by-police-on-tuesday-20170210-story.html
....chief spokesman for the Baltimore Police Department, explained how it all went down to reporters: Officers noticed a car driving erratically, so they followed with some help from Foxtrot overhead, and as they followed along, they spotted the door of the car open then close, open then close, and eventually Deal ran out of the car and took off, so police officers ran after him.
Deal and Det. David Kincaid Jr. met up a few streets over, at Frederick Avenue near South Monroe Street. Kincaid wore a body camera and it was on, and the footage released Thursday shows Kincaid running after Deal, with the two crossing paths near an alley and Kincaid, who already has his weapon drawn, meeting up with Deal, who twists back as he hits the street and moves his gun up toward Kincaid.
So Kincaid, "fear[ing] for his safety," fired, hitting Deal four times and killing him.