Jeffrey Michaels pleaded not guilty in his ex-girlfriend’s death before authorities announced an accessory arrest involving his father.
FRESNO, Calif. — The prosecution stemming from the death of Fresno mother Tatyana McIntyre has widened beyond the murder case against her ex-boyfriend, with Jeffrey Vernon Michaels pleading not guilty and authorities later arresting his father on suspicion of being an accessory.
The legal developments mark a new stage in a case that began Aug. 4 as a search for a missing mother of seven. Michaels, 39, is accused of killing 30-year-old McIntyre, also known as Alison Riley, after she went to his southeast Fresno home. He entered his not guilty plea Aug. 17 after missing two earlier arraignment appearances. Less than two weeks later, the Fresno County Sheriff’s Office arrested his father, Jeffrey William Michaels, on suspicion of being an accessory. The elder Michaels posted bond. Public reporting has not disclosed a full account of what investigators allege he did or when they believe any assistance occurred.
The murder case itself remains at an early stage, and the distinction between accusation and proof is central to the proceedings. Prosecutors will have to establish in court that Michaels caused McIntyre’s death and satisfy the elements of the charged offense. Defense attorney Marina Pincus appeared with Michaels when he entered his plea. Senior Deputy District Attorney Adam Christopherson told local media that Michaels could face 26 years to life if convicted of all charges described at the time. His next reported hearing is set for Sept. 23, when the court is expected to consider bail.
McIntyre was found after police served a search warrant at a home in the 5700 block of East Grove Avenue. Records cited by KFSN showed that the residence belonged to Michaels, and McIntyre’s family identified him as her former boyfriend and the father of two of her children. Police said she had suffered several lacerations, including wounds to her upper body. Detectives also reported finding evidence of a disturbance inside the residence. Authorities have not publicly released a complete reconstruction of the confrontation they believe occurred there, and Police Chief Mindy Casto said shortly after the arrest that a motive remained unknown.
Those findings came after a rapidly developing missing-person investigation. Officers were called on the evening of Aug. 4 after McIntyre failed to pick up one of her daughters from school and relatives could no longer reach her. Investigators searched multiple locations but did not initially find her. The case was then handled by the Fresno Police Department’s Domestic Violence Unit, which determined that McIntyre’s last known location was Michaels’ Grove Avenue residence. Detectives obtained a warrant and searched the house on Aug. 5, shifting the investigation from a search for a missing woman to a homicide case.
Other evidence drew investigators beyond the house. McIntyre had been using a rental vehicle on the day she vanished. Her family told reporters that surveillance footage captured the vehicle traveling toward an orchard later that afternoon, and police eventually found it abandoned there. McIntyre’s belongings remained inside, according to reporting on the investigation. Relatives also said her phone had registered near Michaels’ home before it stopped providing service. Police have not publicly explained every conclusion drawn from the phone data, video and vehicle evidence, but together those elements became part of investigators’ effort to trace her movements after her family last heard from her.
Michaels was not at the residence when officers found McIntyre. Authorities said he had left Fresno, and later reporting placed him in the Salinas area before his return. Police made contact with him, and Casto said he eventually agreed to come back. Michaels arrived at Fresno police headquarters late Aug. 6 and was booked into the county jail early Aug. 7 on suspicion of murder. Initial jail reporting listed bail at $1 million. His subsequent court appearances became an issue when he did not attend the first two scheduled arraignments.
Jail officials told local media that Michaels had been placed in an observation cell because staff believed he might pose a danger to himself. That information explained his custody status and missed hearings but did not address the merits of the criminal allegation. When he eventually appeared Aug. 17, he entered the not guilty plea that formally put the prosecution on a contested path. No trial has occurred, and no fact finder has determined that Michaels committed the killing. The public evidence released so far represents the investigative and prosecutorial account, not a final adjudication.
The later arrest of Michaels’ father potentially introduces a separate set of questions. An accessory allegation generally concerns conduct authorities believe occurred in relation to another person’s alleged crime, but officials have not publicly detailed the specific theory in Jeffrey William Michaels’ case in the reporting reviewed for this story. KFSN reported that he was taken into custody in late August and later released on bond. His arrest does not establish that he committed an offense, and the allegation against him is legally separate from the question of whether prosecutors can prove the murder charge against his son.
McIntyre’s relatives have provided additional context about the former couple’s relationship. Her mother told KMPH that McIntyre had previously described incidents of domestic violence involving Michaels, including allegations that he choked her and kept her from leaving. She said those concerns had been reported to authorities. Later reporting also described a message McIntyre sent to her mother expressing fear and identifying Michaels if she were harmed. Those family accounts may provide context for investigators, but prosecutors would have to establish the admissibility and relevance of any prior incidents or statements before they could be used as evidence in a criminal proceeding.
The family’s account of Aug. 4 begins not with a police investigation but with a breakdown in McIntyre’s normal routine. She had gone to see the two children she shared with Michaels, according to relatives. Later in the day, another child was not collected from school. Her ex-husband and other relatives tried to reach her and became increasingly concerned. Family members said the last contact came around the time McIntyre reached the Grove Avenue home. By that evening, the concern had become a formal missing-person report, setting in motion the searches, warrant and discovery that led police to Michaels.
Several major questions remain outside the public record. Police have not announced a confirmed motive. Early local reporting said investigators were searching for the weapon believed to have been used, and authorities have not publicly released a comprehensive evidentiary timeline explaining exactly when McIntyre died, how the abandoned vehicle reached the orchard or what led investigators to the later accessory allegation. Those gaps do not necessarily reflect what detectives or prosecutors know; they mark the difference between evidence collected in an active criminal case and information authorities have chosen or been permitted to release publicly.
McIntyre’s death has left seven children without their mother, according to her family. Two of the children she shared with Michaels were reported to be in the care of a relative after the arrests. Family members have attended court proceedings and have said they intend to continue following the case. They also established a fundraiser for funeral expenses. Their search for McIntyre ended quickly, but the legal process created by her death is likely to unfold far more slowly as prosecutors, defense lawyers and the court address the evidence.
Two criminal cases now stand where a missing-person investigation began in early August. Jeffrey Vernon Michaels faces a murder charge he denies, while his father separately faces an accessory allegation and has been released on bond. No court has determined either man guilty. The next reported step in the murder case is a Sept. 23 bail hearing, after which the legal process will continue to determine which parts of the prosecution’s account can be supported in court.
Author note: Last updated September 21, 2026.