Michael Rodriguez described a violent family conflict, while police assembled a case from a witness, a hidden body and his own alleged admissions.
EL MIRAGE, Ariz. — Michael Rodriguez offered police an account in which a bitter confrontation with his father spiraled out of control, but investigators say other parts of what followed — including the concealment of Salvador Ortiz Rivera Jr.’s body and the disposal of possible evidence — helped turn that account into a second-degree murder case.
Rodriguez, 48, is accused of second-degree murder and abandonment or concealment of a dead body in Rivera’s death, and authorities also listed a probation violation. Yet the public story of the case is not built around a single uncontested narrative. It includes Rodriguez’s description of a fight, allegations he later made about his father, a witness’s account of being sent to Rivera’s home, and physical observations police reported after finding Rivera concealed in a vehicle repair pit. The result is a case in which the defendant has spoken extensively, while some of his most dramatic claims about the victim remain uncorroborated in the reports reviewed.
According to court paperwork, officers went to Rodriguez’s home a few blocks from Rivera’s residence after discovering Rivera’s body. During questioning, Rodriguez acknowledged that he and his father had serious problems, investigators said. He described prior tension and told detectives Rivera had caused him to spend six years in prison. Rodriguez framed that history in unusual terms, saying the earlier trouble came from his failure to mind his own business at a place he called the “compound.” The news reports citing the court paperwork did not provide the records from that earlier imprisonment or verify Rodriguez’s explanation for it.
Rodriguez then described the final confrontation. Investigators said he told them Rivera drank often and that the two men argued. Rodriguez claimed that his father called him crazy and that he then lost control. He also said he blacked out during the altercation and became aware again after Rivera was already dead, according to the court account. That version, if accurately reflected in the records, is Rodriguez’s description of his state of mind. It does not by itself establish how Rivera died, what Rodriguez remembered during the confrontation or whether investigators accept every part of his account.
Other statements attributed to Rodriguez went beyond a general admission that a fight occurred. Police said he acknowledged striking Rivera in the head with a metal bar. Prosecutors also said Rodriguez told investigators that he disposed of the bar and discarded the shoes he had been wearing. Those alleged acts are significant because they concern potential physical evidence after the confrontation. The published reports do not say whether either the bar or the shoes were later found, what testing may have been performed or whether investigators recovered other forensic evidence from the Luna Street property.
Rodriguez’s explanation of what he did after seeing his father dead also drew investigators’ attention. Court records say he described his immediate concern as finding a way to dispose of or conceal the body rather than contacting authorities. Police said that when they asked why he did not call them, Rodriguez offered an explanation centered on his view of Rivera: He claimed his father was beyond anyone’s control and effectively above the law. That was Rodriguez’s characterization. The reports reviewed do not cite law enforcement findings substantiating that portrayal of Rivera.
Rodriguez’s accusations continued when detectives asked whether anyone else might be in danger. According to Arizona’s Family, he said Rivera’s brother was “on his radar.” Rodriguez also alleged that his father had tried to persuade him in 2021 to kill that brother. The statement added another troubling dimension to the interview, but it also illustrates the need to separate a defendant’s allegations from independently verified evidence. Nothing in the reports reviewed established that Rivera made such a request in 2021, and authorities did not publicly announce evidence supporting Rodriguez’s claim.
His portrayal of Rivera surfaced again in court. During an initial appearance, Rodriguez spoke about his father and suggested he had associations with “La Familia,” according to Law&Crime. He described Rivera as a dangerous person and told the court, “I had to stop him.” The reporting did not establish what Rodriguez meant by “La Familia,” nor did it independently confirm a gang affiliation or criminal organization connection. His courtroom remarks therefore stand as statements by an accused man about the person he is charged with killing, not as findings made by investigators or the court.
The case did not begin with those statements. Police had already been led to Rivera’s home by another man whose account placed Rodriguez in a series of events after Rivera was apparently dead. That witness told a state trooper at a QuikTrip in Youngtown that Rodriguez had previously invited him to go to Rivera’s house and take whatever he wanted. The witness said he went there, discovered Rivera dead and decided against taking property. His later decision to alert authorities provided police with information that existed independently of Rodriguez’s subsequent interview.
The witness said there was also a second trip to the home after midnight Wednesday. Rodriguez and another man came to his residence, he said, and all three went to Rivera’s house. According to police, Rodriguez wanted the witness to retrieve Rivera’s wallet because Rodriguez believed a bank card was connected to $5,000. The witness said he could not take the wallet and instead told Rodriguez it was gone. He later went to the gas station intending to report what he knew and encountered the trooper. The third man reportedly remained in a vehicle during the visit to Rivera’s property.
That account sent authorities to Luna Street. In a carport-type structure, police located a concrete-lined pit used for vehicle repair. Rivera’s decomposing body had been concealed in the pit beneath plywood, investigators said. Police also reported a plastic bag over his head and marks they believed indicated strangulation. The reports reviewed did not include a publicly released final autopsy establishing an exact cause of death. They also did not provide a complete inventory of forensic evidence from the home, making it important to distinguish the initial observations of officers from final medical conclusions.
The witness told investigators he had last seen Rivera alive on either Saturday or Sunday, placing the last known sighting several days before officers discovered the body on Wednesday. Police did not publicly identify a precise time of death in the material reviewed. That chronology leaves investigators with multiple periods to reconstruct: Rivera’s final known hours, the confrontation described by Rodriguez, whatever happened between Rivera’s death and the concealment of the body, and the later trips to the property described by the witness.
Those separate threads matter because Rodriguez’s own description does not stand alone. A criminal case can contain statements that help police develop evidence without making every assertion in those statements true. Here, authorities say Rodriguez admitted hitting Rivera and disposing of objects, while he simultaneously made broader claims about his father and his own memory. The witness, meanwhile, supplied a separate route to the body and described alleged attempts involving Rivera’s property. The physical scene offered another category of evidence. How those pieces fit together is ultimately a question for the criminal process, not something resolved by an arrest affidavit or initial court appearance.
Rodriguez was booked into the Maricopa County jail system and held on $2 million bond, according to the reporting based on court records. During his court appearance, he also challenged the idea that he posed a flight risk. The bond decision keeps him in custody unless its conditions are later changed or met, but it is not a determination of guilt. Second-degree murder and concealment of a dead body remain allegations unless established through a plea or proof in court.
No reliable later report located for this story established that Rodriguez had entered a plea resolving the case, been convicted or received a sentence. The material also did not establish a final medical examiner finding, Rivera’s age or independent proof of the accusations Rodriguez made about his father. For now, the public record described by the available reporting shows a homicide investigation shaped by an unusually talkative defendant whose statements both supplied evidence against him and introduced claims investigators have not publicly verified.
Author note: Last updated Aug. 23, 2026.