Colorado shooting: Police were 'warned about shooter' before he opened fire on deputies

Weeks before a gunman opened fire on Colorado sheriffs deputies, police officers had reportedly been warned about the assailant posting disturbing messages online. Douglas County Sheriff’s Department officials have identified the shooter as 37-year-old Matthew Riehl. According to Wyoming’s K2 radio, students at the University of Wyoming’s law school received an email in early November warning about a “suspicious behavior involving a former student” and attached an image of Mr Riehl, who had graduated from the school.

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