The officers were shot after responding to an initial report of domestic violence at the Copper Canyon Apartments just after 5 a.m., Sheriff Tony Spurlock said in a news conference.
Deputy Sheriff Zackari Parrish was pronounced dead at the hospital, where other law enforcement soon after formed a large memorial procession heading to the county coroner's office.
The sheriff's office told residents to shelter in place, avoid windows and stay away from exterior walls. There was no immediate word on the condition of the injured officers or civilians. The landscaped apartment complex is 16 miles (28 kilometers) south of Denver.
Authorities said there are no updates on the status of the deputies down. He previously was with the Castle Rock Police Department.
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Among other countries which supported the move was China, a lone major ally of the North Korean regime in the region. Moscow calls on USA and allies to refrain from provoking tensions and exerting "maximum pressure" on Pyongyang.