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Authorities in Colorado say three people were shot outside of the Red Rocks Amphitheatre in suburban Denver following a concert featuring rappers Nas and ScHoolboy Q

According to the Jefferson County Sheriff's Office, the shooting took place late Thursday night in the venue's parking lot. 

The amphitheatre was locked down after the incident with no one being allowed in or out.  Investigators say the victims have been transported to a hospital.  So far no one is custody. 

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