Mario Andres Vidales Mendez

Mario Andres Vidales Mendez, a 23-year-old resident of Redwood City, California, is remembered as a beloved brother whose life was cut short by a sudden act of violence. His family was left devastated by his loss, with his sister creating a GoFundMe campaign to cover his funeral expenses.

On the morning of October 14, 2018, Mario was at a combined 22nd birthday and Halloween-themed party held in the yard of A-1 Auto Service and Towing on the 2500 block of Pulgas Avenue in East Palo Alto. The party, attended by about 35 to 40 people, continued for hours until small fights began to break out. Though the altercations did not initially involve weapons, the situation escalated dramatically. An uninvited guest, whose friend had reportedly lost a fistfight to another partygoer, pulled out a semiautomatic handgun.

Around 2:44 a.m., the East Palo Alto Police Department was alerted to gunfire by its ShotSpotter system and 911 calls. Officers arrived at the scene in under two minutes to a chaotic scene with four people suffering from gunshot wounds. Mario and another young man, 22-year-old Eduardo “Lalo” Alvarado Sandoval of Stockton, were pronounced dead at the scene. Two other victims were transported to a hospital with life-threatening injuries but survived. One of the survivors required 15 surgeries for their injuries. Investigators determined the shooting was not gang-related but stemmed from the dispute at the party.

The gunman fled the scene immediately after the shooting. For years, the case remained a painful open wound for the victims' families. In April 2019, the nonprofit organization Mothers Against Murder offered a $5,000 reward for information leading to an arrest, which was later increased to $20,000 in December 2020. Authorities publicly identified the suspect as Julian Rico Santana, who was 18 at the time of the shooting and a resident of East Palo Alto. He was described as being 5 feet 10 inches tall, weighing 240 pounds, with black hair and brown eyes. The San Mateo County District Attorney's office believed he had fled to Mexico the day after the killings.

Margaret Petros, the executive director of Mothers Against Murder, spoke of the families' anguish during the long search for the suspect. "He's nowhere to be found for two years now, leaving families of his violence in a lot of pain and desperate for justice," she said in a statement. Eduardo Sandoval's mother, Veronica, had previously made a public plea for tips, saying, "Oct. 14, 2018, the last day I saw my living son. That day our lives changed forever."

After a multi-year manhunt, a major breakthrough occurred. On March 16, 2023, Julian Rico Santana was arrested in Mexico through a joint operation by Mexican authorities and U.S. Marshals. He was extradited back to the United States to face justice. In April 2023, Santana was arraigned on multiple murder charges. During his first court appearance, he was denied bail and a defense attorney was appointed. "This arrest is long overdue," Margaret Petros stated following the arraignment. "Today, we expect the justice system to move forward with the urgency and accountability that these families deserve." As of April 2023, Santana remained in custody awaiting his next court appearance.