Why? Del Rio was shot in the back.
According to the Denver Police Department, officers responded to a robbery report at the store, 5125 Chambers Road, around 9:20 p.m. on Monday. As they were en route, the call was updated with new information: shots fired.
By the time DPD personnel arrived, a man later identified as Del Rio was lying on the ground after having been felled by a gunshot. He was pronounced dead at an area hospital a short time later.
At this point, police believe two individuals reportedly wearing masks attempted to rob the store. Del Rio, who worked there as a clerk, tried to flee, but one of the suspects made sure he didn't get far.
Del Rio's loss is being felt among friends, acquaintances and family members like his father, whose conversation with 9News following the murder paints a heartbreaking portrait of grief. It's on view below, along with an interactive graphic showing the area near the scene; if you have problems seeing the image, click "View Larger Map." And if you have any information about the case, contact the Denver Police Department 720-913-2000 or 720-913-STOP (7867).
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More from our Mile High Murder archive: "Nine Denver homicides in first three months of 2012: See where they happened."