On the evening of November 8, 2018, a meeting at Lakeside Park in Tucson turned deadly. Sixteen-year-old Amonn Sandoval met with a small group in the park’s west parking lot; shortly after the groups converged, a brief conversation escalated into an exchange of gunfire. Three young men were struck: Sandoval, 21-year-old Matthew Favela and 16-year-old Carlos Ross. One victim was pronounced dead at the park; Sandoval and the other wounded victim were taken to Banner University Medical Center with life-threatening injuries and both died after arrival.

An unidentified male who had been with Sandoval fled the scene before police arrived. Two companions who had been with Favela and Ross stayed and cooperated with detectives. Tucson Police investigators, assisted by gang detectives though the shooting was not believed to be gang-related, identified and arrested three teenage suspects: 15-year-old Filomeno Edwardo Flores, 16-year-old Maki Dion Riley, and 16-year-old Aaron Rodriguez, each charged with first-degree murder. Court filings later record pleas and convictions in related counts for the defendants.

Are there witnesses who were at Lakeside Park that night or anyone with information about the events leading up to the shooting?