On a March day in 2016 in Algodones, New Mexico, three people were found slain: 32-year-old John Santistevan, 48-year-old Geraldine Sena, and her 25-year-old son Samuel Sena. Investigators discovered a truck abandoned on a remote ranch road that was stained with blood and brain matter, which triggered the homicide investigation.

Police say the victims and several suspects were involved in a stolen car ring. Three men were identified as primary suspects: Omar Flores-Castillo, Alberto Rodriguez, and Samuel Perez Jimenez. Perez Jimenez pleaded guilty to conspiracy and tampering with evidence and agreed to testify against his co-defendants. Flores-Castillo was later tried and convicted on multiple charges, including two counts of second-degree murder and three counts of kidnapping, with the kidnapping sentences ordered to run consecutively.

If anyone knew John Santistevan or has information about the stolen car ring or the killings in Algodones, please come forward.