On February 12, 2025, at about 9:09 p.m., a 911 call reported a shooting at a residence in the 4000 block of East 8th Street in Casper, Wyoming. Responding officers found 16-year-old Riley Jacob Sears, a Bi-racial male, inside the home with a gunshot wound; he was pronounced dead at the scene. The Natrona County Coroner later confirmed the identification.

Investigators say the people present that evening knew one another and had been hanging out in an upstairs bedroom playing video games when an 18-year-old produced a handgun that discharged and struck Riley in the right side of his head. Scene work described a bullet path through a gaming chair and out a glass door. Police recovered multiple firearms at the residence and marijuana/THC paraphernalia in the room; a handgun reportedly stolen the previous summer was later recovered behind a shed after the homeowner told the 18-year-old to get rid of the gun.

Court records and reporting identify the 18-year-old as Luka Rasmussen, who was arrested and charged with involuntary manslaughter; bond was set at $500,000 cash or surety and he pleaded not guilty on April 1, 2025. Authorities have not announced additional suspects. If anyone was present that night or has information about what happened, please share what is known with investigators.