DENVER (AP) — A television station security guard accused of fatally shooting a pro-police demonstrator following opposing rallies has been charged with second-degree murder.

The Denver's district court clerk's office said the charges were filed against Matthew Dolloff early Monday in the death of 49-year-old Lee Keltner. Dolloff was protecting a KUSA-TV producer at the time of the incident.

The next hearing is set for Wednesday morning. No attorney has been listed for Dolloff yet in court records.

People convicted of second-degree murder face a mandatory sentence of between 16 and 48 years in prison.

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