In the pre-dawn hours of December 24, 2016, 34-year-old West Valley City resident Gary Hart was shot and killed in the parking lot of the Shopko at 4850 W. 3500 South. The shooting followed a noisy house party that had dispersed; Hart, his wife and several others were in a minivan checking that guests had left when they encountered a black car occupied by cousins Martin Daniel Diaz, 25, and 17-year-old David Ivan Diaz (also known as Lil Knuckles).

An altercation unfolded and the cousins reportedly questioned the minivan occupants about gang affiliation. When someone from the minivan answered, Martin and David Diaz are said to have opened fire. Hart was struck in the chest and died at the scene. Ernest Jones was hit multiple times and critically injured but survived; a third person suffered a minor injury. The shooters fled and investigators later identified and detained the Diaz cousins.

Martin Daniel Diaz was booked into the Salt Lake County Jail on charges including first-degree felony murder and two counts of attempted murder. David Ivan Diaz was taken to a juvenile detention center and later charged as an adult with first-degree felony murder and other felony counts tied to firearm discharge causing serious bodily injury. Has anyone with knowledge of that night or the people involved come forward to investigators?