When cops arrived, they heard a shot. They immediately called SWAT and evacuated the building via reverse-911. But Karen Kulikowski and Larry O'Rourke were apparently already dead.
Their bodies were found inside their apartment unit shortly thereafter. O'Rourke was 63. Kulikowski was fifty. The supposition based on these basic facts: murder-suicide.
Look below to see the area near the scene; if you have problems seeing the image, click "View Larger Map."
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More from our Mile High Murder archive: "Kevin McGregor allegedly bought tacos, cigars after killing football player Todd Walker (62)."