Rene Diaz was 27 and a Fresno resident when he was shot dead on May 23, 2015, during a party in the Calwa neighborhood. The gathering turned violent after an argument about driving; Diaz went to defend a friend and was fatally struck by gunfire. Ramon Delgado was also killed and three others were wounded. Diaz had recently graduated from San Joaquin Valley College and had become engaged that same night; his fiancée and other friends were present.

Police linked the shooting to gang activity and arrested 26-year-old Conrad Daniel Serna, identified as a Bulldog gang member, on June 2, 2015. Investigators said Serna and another man attended the party, got into a fight with several attendees, and that Serna allegedly pulled a gun and opened fire; Serna was also injured in the exchange. The case highlighted ongoing concerns about gang violence in Fresno.

Did anyone who knew Rene, Ramon, or the people at that party come forward with information about what led to the fight?