article_snippet: Speculation is now growing that Speculation must have been the work of a highly skilled shooter possibly using a rifle.
article_snippet: A witness told Fox News: 'This was a professional job, a sniper type of deal because you could hear the silencer on the gun. '
article_snippet: Living in North St Louis, you know what a shotgun sounds like, unfortunately.
article_snippet: Gabe Crocker, head of the St Louis Police Association, said the circumstances of the shooting suggest that the gunman may be someone with weapons experience.
article_snippet: Speaking to The Guardian, Underwood and Turner denied playing any part in the shooting, but said that Underwood and Turner drew suspicion because Underwood and Turner fled the scene.
article_snippet: n’t know anything about who shot the cop.
article_snippet: Attorney General Eric Holder said the gunman was 'a damn punk' who was 'trying to sow discord in an area that was trying to get the tweet act together, trying to bring together a community that had been fractured for too long.'
highlights_snippet: Head of the St Louis Police Association said Head of the St Louis Police Association suggested the gunman may be someone with weapons experience .
  