Jurors considered Dhoua Lao’s pleas to Martin Yost alongside physical evidence and the circumstances of her death.
MOUNT CLEMENS, Mich. — Before a Michigan jury convicted Martin Yost of murdering his girlfriend, prosecutors presented messages in which Dhoua Lao pleaded with him not to kill her and offered money in an effort to avoid being hurt.
The messages became one of the most revealing parts of a two-week trial that ended June 12 with Yost’s conviction for first-degree premeditated murder. They gave jurors evidence about the couple’s relationship before Lao’s death and supported the prosecution’s argument that the fatal violence was not an isolated, unanticipated encounter. Yost, 45, is scheduled to be sentenced July 28 for killing Lao, also 45, on Nov. 13, 2023. Michigan law requires life imprisonment without parole for an adult convicted of first-degree murder.
Public reports have disclosed only a limited portion of the communications, and the complete exchanges were not available for independent review. According to a courtroom report cited by Law&Crime, Lao asked Yost not to kill her and offered him money not to hurt her. Prosecutors characterized the messages and other evidence as presenting a disturbing picture of the relationship. Because the complete context has not been published, the messages should not be expanded beyond what was reported or treated as proof of statements that have not been disclosed.
The significance of the communications came from their place within a larger body of evidence. Prosecutors were required to prove that Yost killed Lao and that the act was willful, deliberate and premeditated. A first-degree verdict could not rest merely on a showing that he acted violently or caused her death. Jurors had to assess whether the evidence established the required intent. Lao’s recorded fear, the nature of the assault, the sequence described by investigators and the manner in which officers found the couple all contributed to that determination.
Authorities said another driver saw a man assaulting a woman inside a vehicle in Detroit and reported it to police. The caller provided a description of the car. About 30 minutes later, officers in Roseville found a matching vehicle parked on Gratiot Avenue near Interstate 94. Yost was unconscious or incapacitated in the driver’s seat. Lao was dead in the passenger seat. Police believed the assault occurred in Detroit before Lao was placed in the car and driven to Roseville, according to WDIV.
The physical evidence showed a severe attack. Lao had significant injuries to her head, face and hands, authorities said. Macomb County Prosecutor Peter Lucido said after the arrest that the injuries to her hands suggested she had tried to protect herself. Trial reports described the condition in which officers found her, but the graphic details are not necessary to explain the case. The important legal point was that prosecutors used the injuries to demonstrate the force, duration and intentional nature of the assault.
Yost was covered in blood when police arrived, according to authorities. His position in the driver’s seat beside Lao’s body created an immediate focus for investigators, but prosecutors still had to establish what occurred before officers reached the car. The reported eyewitness account helped place an assault shortly before the discovery. The messages supplied evidence from an earlier point in the relationship. Medical findings and the condition of the vehicle added physical support. Together, the evidence allowed the prosecution to offer a sequence broader than the final roadside scene.
Yost’s history also became part of public discussion surrounding the case. The Detroit News reported that he had prior convictions for domestic violence, carrying a concealed weapon and fleeing police. His most recent domestic violence conviction occurred in 2020, and he completed parole about three weeks before Lao’s killing. Lucido said investigators did not know whether Lao was aware of Yost’s record or recent release from supervision. No reliable public evidence reviewed for this article answers that question.
What Lao knew about the record was not an element prosecutors needed to prove. Its relevance instead lay in the broader context of official statements identifying the case as domestic-violence related. Care is necessary when describing that context. A prior conviction cannot substitute for proof of a new charge, and Yost was entitled to have the murder case decided on admissible evidence connected to Lao’s death. The June verdict means jurors found that evidence sufficient beyond a reasonable doubt after hearing both sides at trial.
The available reports do not give a complete account of the defense strategy. They do not identify whether Yost disputed causing the injuries, challenged premeditation, contested the interpretation of the messages or raised another theory. Without a transcript or detailed defense statement, those arguments should not be reconstructed through speculation. What is established is that the proceedings lasted two weeks before Circuit Court Judge Rachel Rancilio and that the jury returned a guilty verdict for first-degree premeditated murder.
The verdict represented an escalation from the charge announced immediately after Yost’s arrest. The Macomb County Prosecutor’s Office said in November 2023 that he had been arraigned on second-degree murder, which did not require the state to prove premeditation. He was ordered held in jail and later prosecuted on the first-degree offense that went to the jury. Public reports reviewed for this article do not state precisely when or through which filing the charging change occurred. The jury’s decision established liability for the higher offense.
Lao was a mother of two, according to WDIV. The public record about her life remains far less detailed than the record describing her death, a common imbalance in criminal cases built around police reports and courtroom evidence. The messages offered a limited view of her attempts to navigate a threatening situation, but they should not be treated as a complete account of her relationship or identity. Prosecutors and officials focused after the verdict on the loss suffered by her family rather than only on the violence presented at trial.
Lucido said the conviction illustrated the most serious possible consequence of domestic violence. He credited investigators, trial prosecutors and Lao’s relatives with pursuing accountability. He also said the verdict could not undo the family’s loss. Chief Assistant Prosecutor Sian Hengeveld and Assistant Prosecutor Erica Clute-Cubbin tried the case on behalf of the state. The sources reviewed did not contain a post-verdict comment from Yost’s lawyers or indicate whether the defense plans to seek a new trial or file an appeal.
At the July 28 sentencing hearing, the judge is expected to formally impose life without parole, the punishment set by state law for Yost’s conviction. The proceeding may also give Lao’s family an opportunity to speak about her and the effect of the killing. Yost remains held without bond in the Macomb County Jail. Any appeal would come after the trial judgment and would address legal claims rather than retry the facts before a new jury.
The messages that surfaced at trial cannot explain every part of Lao’s experience or answer every unresolved question about the relationship. They did, however, preserve her own reported pleas before her death. In a case dominated by the condition of a car and the injuries officers discovered, those communications gave jurors evidence of fear and threatened violence that existed before the final police response.
Author note: Last updated July 15, 2026.