UPDATED: 3:17 PM from the Sheridan Wyoming Police Department:

Police Chief Travis Koltiska of the Sheridan Police Department shared this tragic news today about the scene in Downtown Sheridan:

It is with great sadness that Sgt. Nevada Krinkee, a six and a half year veteran of the department, was shot and killed while attempting to serve a trespass warning on a male subject near the intersection of 5th Street and Val Vista Street. Sgt. Krinkee was transported to Sheridan Memorial Hospital where he succumbed to the injuries.
The male subject fled the scene and was located a short time later in the area of 6th and N. Sheridan Avenue. Members of the Sheridan Police Department, Sheridan County Sheriff’s Office, and the Wyoming Highway Patrol established a perimeter and determined the subject was barricaded inside a residence. Other residents in the vicinity were evacuated from the area. Members of the Gillette Police Department tactical unit and Crisis Negotiators responded to assist and a stand-off ensued. The scene is still active at this time.
The investigation is being turned over to The Wyoming Division of Criminal Investigation. Additional information regarding this tragic event will be available through the DCI Public Information Officer.
The entire department is shocked and saddened by this senseless act and appreciate all the thoughts and prayers from our community. Please respect the privacy of our brother Nevada’s family through this trying time.
More information will be provided as the situation evolves.

This just in from Sheridan, Wyoming:

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Today, around 12:34 PM, Sheridan Wyoming Police and Fire notified residents of an active investigation off of N. Sheridan Avenue in Sheridan, Wyoming.

The public has been advised to avoid the area, as police have boundaries set up in the area.

Sheridan Media posted an update on the situation, saying Sheridan Chief of Police Travis Koltiska has said there is no longer a threat to the public at this time.

Sheridan Police say they have the situation contained, but ongoing at this time.

Sheridan Police are being assisted by the Wyoming Highway Patrol, Gillette PD, and Sheridan County Sheriff's Office.

As more information is released, this article will be updated.