Child welfare officials were trying to locate 12-day-old Benjamin before his death, which later inspired faster-response legislation in Idaho.
NAMPA, Idaho — Two days before 12-day-old Benjamin died in a Nampa travel trailer, Child Protective Services had already asked police to help locate the newborn and his parents for a welfare check, according to Canyon County officials.
That failed effort to reach the family became one of the most consequential facts to emerge from the case. Benjamin died Dec. 16, 2025, before authorities completed a safety check. His mother, Allysen Armenta, later pleaded guilty to felony injury to a child and entered Alford pleas to two evidence-related felonies. His father, Brian Lemke, pleaded guilty to delaying notification of the death and concealing evidence and was sentenced to prison. The case also prompted lawmakers to revisit how Idaho responds when officials receive warnings about newborns whose caregivers have serious prior child-welfare histories.
The warnings did not come only through government channels. Women caring for some of Armenta and Lemke’s other children told Idaho News 6 that they had contacted state officials because they were worried about the baby. One adoptive mother said she wanted authorities to physically see the newborn and determine whether he was in a safe environment. Another woman who had fostered one of Lemke’s children said she also reached out after learning Benjamin had been born. A later report described a third warning from someone familiar with the family’s history and living circumstances.
The concern was tied to what court documents and local reporting said had happened with the couple’s older children. A probable cause affidavit cited in news reports said five children had previously been removed from their care. Armenta and Lemke also had prior convictions connected to child injury or abuse. The women who contacted authorities said that history made them fear for the newborn’s safety. Their warnings did not establish that Benjamin was being harmed, but they became important after his death because they showed that people outside the home had raised concerns before police were called to the property.
Benjamin died sometime between about 11 p.m. Dec. 15 and 2 a.m. Dec. 16 while sleeping in a bed with his parents in a travel trailer behind a Nampa residence, according to the Canyon County Prosecuting Attorney’s Office. The county coroner later determined that he died of suffocation and ruled the manner accidental. Prosecutors did not bring a homicide case. Their criminal cases instead focused on the conditions surrounding the infant and what Armenta and Lemke did after discovering he was dead.
Investigators said Lemke moved Benjamin from the trailer to the main house, swaddled him and placed him in a bassinet before calling 911 at about 3:30 a.m. Prosecutors said that action destroyed the original scene and created another one inside the residence. Armenta, meanwhile, remained inside the trailer for roughly an hour and a half before officers located her, according to the county prosecutor’s account. Early statements to authorities suggested Benjamin had been found unresponsive in the bassinet, but investigators concluded that the infant had actually died in the trailer.
The trailer itself became part of the injury-to-a-child case. Prosecutors described the space as unsuitable for a newborn, and reports based on investigative records described extensive trash, dirt, cigarettes and animal waste. At a July plea hearing, Armenta acknowledged that the home environment was unfit for a baby and discussed sleeping with Benjamin in the same bed. She also acknowledged having access to a cellphone that could have been used to contact first responders. Those statements came during a proceeding that did not end with the plea agreement everyone had expected.
Armenta had entered the July 30 hearing under an arrangement in which she was expected to plead guilty to injury to a child and failure to notify authorities of the death while prosecutors dismissed other charges. Judge Thomas Whitney stopped the proceeding as he questioned her about the factual basis for the pleas. After consulting the lawyers, Whitney announced that a legal issue had arisen and said the parties needed more time to research it. The court did not finalize that agreement and instead scheduled another hearing.
The revised agreement in August was different. Armenta pleaded guilty to felony injury to a child and entered Alford pleas to two counts involving destruction, alteration or concealment of evidence. An Alford plea allows a defendant to accept a conviction without expressly admitting factual guilt while acknowledging that prosecutors could prove the charge. A misdemeanor obstruction allegation was dismissed. The change meant that the final disposition addressed the evidence and crime-scene conduct more directly than the arrangement contemplated at the interrupted July proceeding.
While the criminal case advanced, Benjamin’s death was also cited in the Idaho Legislature. A proposal known as Benji’s Law was introduced to require faster safety responses in certain reports involving very young children whose caregivers have specific, documented risk factors. Public testimony centered on the concern that a newborn can face immediate danger while normal child-protection timelines are still running. The legislation advanced after debate that included both support for faster intervention and questions about due process and the scope of state authority.
The measure was signed into law in April. Reporting on the law said it requires a rapid safety check in qualifying high-risk infant cases, including certain situations involving prior child-abuse convictions, termination of parental rights or placement on child-protection registries. The law does not by itself establish abuse or automatically authorize removal of a child. Its purpose is to accelerate the initial response when a qualifying report has already raised concern. Supporters repeatedly cited Benjamin’s death as the event that exposed what they saw as a dangerous gap in the prior process.
Lemke’s criminal case concluded first. He admitted that he delayed reporting Benjamin’s death and moved the child after death. In July, Whitney imposed a unified 15-year prison term with six years fixed before Lemke may be considered for parole. The judge said Lemke was not being sentenced for causing the infant’s death, reinforcing the distinction between the accidental manner of death and the crimes committed afterward. The sentence reflected the court’s view that altering the scene and delaying notification seriously obstructed the investigation even without a homicide conviction.
Armenta’s punishment remains undecided. On Sept. 24, Whitney allowed her attorney to withdraw and vacated the scheduled sentencing date, saying replacement counsel would need adequate time to prepare. Her three felony pleas remain in place. A status conference is scheduled for Oct. 1 so the court can review whether the State Public Defender’s Office has assigned a new lawyer and decide how to move the case forward.
Nearly 10 months after Benjamin’s death, the case therefore stands at two different endpoints. The criminal system has produced a prison sentence for his father and felony convictions for his mother, whose sentencing is pending. The child-welfare system has also changed through legislation bearing the infant’s nickname. What the court has not done is recast Benjamin’s death as an intentional killing: the official medical finding remains accidental suffocation, while the criminal conduct addressed in court centers on child safety, delayed reporting and the altered death scene.
Author note: Last updated September 30, 2026.