The Missouri prosecution focused on a nonverbal 21-year-old who depended on others as severe malnutrition and loss of mobility progressed over time.
POTOSI, Mo. — A 17-year prison sentence imposed on a Missouri father has brought legal closure to a case prosecutors framed around one central fact: his severely disabled adult son depended on other people to meet basic daily needs while his physical condition steadily deteriorated.
Lawrence A. Riehl, 62, was sentenced Sept. 14 for first-degree involuntary manslaughter, second-degree domestic assault and abuse of a person with a disability in the March 2025 death of his 21-year-old son. The young man was nonverbal and described by authorities as severely disabled. Washington County Prosecuting Attorney John I. Jones IV emphasized that dependence when announcing the outcome, calling the death a tragedy involving a vulnerable person who relied on others for fundamental care. That framing is supported by a sheriff’s probable cause statement documenting serious nutritional problems, loss of mobility, an offer of outside services and the condition in which the young man was eventually found.
The public record does not provide a complete biography of the victim, and prosecutors have chosen not to name him in their official announcements because of his vulnerable status. What the records do establish is the extent of his dependence. Riehl told a detective his son was severely autistic and nonverbal. Medical records later reviewed by investigators showed that he had difficulty standing and eventually could not walk. By the time of his death, investigators said there was evidence of prolonged immobility. Those facts made questions about nutrition, supervision and access to services especially important because the young man’s limitations affected his ability to meet his own needs or independently report worsening conditions.
The first documented warning described in the criminal filing appeared in medical records from March 2024. Those records characterized the young man as having severe fat loss and severe muscle wasting. They also recorded a loss of more than 5% of his weight in a month and recommended a diet higher in calories and protein, along with a daily multivitamin. The same records described his declining ability to stand and walk. Investigators later cited these entries to show that his deteriorating nutritional status was recognized well before his death. The filing does not say that those medical providers predicted a fatal outcome, but it does establish that the problems had reached a level considered severe about a year before he was found dead.
The investigation also identified an attempted connection to outside support. Detective Jason Kaempfe wrote that an investigator with the Missouri Department of Health and Senior Services told him Riehl had been offered and scheduled for services but did not follow up. The court filing does not explain what specific services were offered, whether they would have involved home assistance, case management or another form of support, or why the follow-up did not occur. It therefore cannot establish what the outcome would have been had the services been used. The information remained relevant to investigators because Riehl later told the county coroner that the family had been trying to get his son on Medicaid and into a facility.
The young man died March 26, 2025, before any such placement described in the filing occurred. When deputies responded to the family home, Kaempfe found him on the floor of a bedroom. The warrant application described severe malnutrition and an environment containing trash, empty food containers and human waste. Riehl told investigators that another son had prepared food before going to sleep and that the 21-year-old sometimes spent long periods asleep or awake. According to the detective’s account, the other son later woke Riehl and told him his brother was dead. The filing gives no indication that emergency medical treatment was able to alter the outcome by the time authorities arrived.
The next day’s autopsy gave authorities a medical basis for treating the death as a homicide investigation. The probable cause statement described the young man as 69 inches tall and approximately 50 pounds. Later sheriff-based reporting placed the weight at about 55 pounds; the difference between the accounts is small compared with the overall degree of malnutrition documented by both. The medical examiner determined that the young man died after choking on fecal matter. Kaempfe concluded from the investigation that starvation led him to consume it. The filing also said his knees were locked in place and attributed that condition to his legs remaining in one position for an extended time. Authorities have not publicly stated exactly how long that immobility lasted.
Those findings turned the inquiry toward the care provided before the death. Investigators examined food that Riehl said had been prepared and estimated the nutritional value of about 27 pizza rolls. The detective compared the calories and protein with general federal dietary recommendations. The calculation could not reconstruct every meal the young man had received, and it did not independently establish his full nutritional history. Its significance came from its place beside stronger evidence: his extremely low body weight, the autopsy findings, the locked condition of his knees and medical records showing severe fat and muscle loss a year earlier. Together, those elements led investigators to pursue criminal charges rather than treat the death as solely the result of his underlying disability.
The probable cause statement also documented Riehl’s later contacts with the county coroner. According to the filing, Riehl said the family knew there was a problem and had been trying to arrange Medicaid and facility care. The detective also recorded that Riehl called twice about obtaining the death certificate because of a life insurance policy on his son. No final charge accused him of causing the death to collect insurance, and prosecutors did not publicly identify a financial motive. That distinction matters because the existence of a policy or an inquiry about a death certificate does not, by itself, establish why a crime occurred. The calls were part of the evidence included in the original warrant request, not a separate adjudicated allegation of motive.
Investigators initially sought a second-degree murder charge. Kaempfe signed the probable cause statement on June 12, 2025, after an investigation that included the autopsy, medical records, the death scene, Riehl’s statements and information about previously offered services. Prosecutors later changed course. The Washington County Prosecuting Attorney’s Office said that after reviewing the evidence and autopsy findings, the state amended the charges to first-degree involuntary manslaughter, second-degree domestic assault and abuse of a person with a disability. That change means Riehl’s final convictions should not be described as a murder conviction. The murder count was the earlier allegation; the amended offenses are the charges on which the case was resolved.
Riehl entered Alford pleas to all three counts. The plea procedure allowed him to maintain his position regarding the allegations while accepting that the prosecution had sufficient evidence to obtain a conviction. It is legally different from an acquittal or dismissal: once accepted by the court, the plea results in a conviction and permits sentencing. Circuit Judge Brice Sechrest then imposed 10 years for involuntary manslaughter and seven years for second-degree domestic assault. The two felony terms are consecutive, making the total 17 years. A one-year sentence for abuse of a person with a disability runs concurrently. Prosecutor-based reports said the felony terms were the maximum sentences authorized for those offenses.
Jones said after sentencing that no punishment could restore what had been lost but that his office considered the result a just conclusion. The case ends without a jury verdict and without a public trial that might have produced a fuller record about the household, the young man’s care or the services available to the family. It nevertheless leaves a documented sequence: severe nutritional and mobility problems identified in 2024, services investigators said were offered but not pursued, a death in March 2025 under conditions the medical examiner classified as homicide, and a prosecution that concluded in September 2026 with 17 years of imprisonment.
Available public court information does not show another scheduled proceeding that would reopen Riehl’s criminal liability for the death. The sentencing is therefore the principal legal endpoint of a case that prosecutors ultimately defined not by the disability itself, but by the prolonged inadequate nutrition and care suffered by a young man who depended on others to provide both.
Author note: Last updated November 6, 2026.