Josiah Walker, the teenager who shot 20-year-old Marissa Jones Anderson at a vacant house party on Tucson's east side in April of 2024, was found guilty of negligent homicide this month and sentenced to six years in prison.

He was given 511 days time served.

According to the initial interim complaint, officers arrived at the abandoned property near Wilmot and East Fifth in April of 2024, to find Anderson's body with a gunshot wound to the head.

One of the witnesses told officers there was a party with about 20 people taking place at the home. The witness brought a new shotgun to the party and Walker asked to look at it.

While the witness was going to the bathroom in the desert, he heard a shot fired. He returned to find Anderson on the ground with the gunshot wound, the complaint said.

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