A Michigan father has been sentenced to life imprisonment for brutally murdering his 19-month-old son, according to federal prosecutors. The child was beaten to death following his mother’s plan to have him adopted by a caring family.

Eugene Rantanen, 37, residing in L’Anse, was found guilty of murder and first-degree child abuse for the death of his son, Carter, who was living with him on tribal land in the Upper Peninsula. U.S. District Judge Paul Maloney handed down the maximum penalty on Monday, as reported by the U.S. Attorney’s Office for the Western District of Michigan, asserting that the sentence “will do justice,” according to a DOJ press release.

“Evidence presented at the trial demonstrated that Rantanen was responsible for the care of his young son, Carter, on the night of February 19, 2024,” the release states. “The father and son were alone at their residence on the L’Anse Reservation of the Keweenaw Bay Indian Community when Rantanen contacted 911, reporting that the 19-month-old was not breathing.”

As outlined in the federal complaint, Rantanen informed the 911 dispatcher that he discovered Carter “not breathing” and “slumped over the bed.” He claimed to have left the child for a nap on the bed and noted “cuts” visible on Carter’s tongue. The boy regained consciousness and was taken to a hospital, where medical personnel observed bruising on his head, torso, and “other regions.” A CT scan revealed internal bleeding, and the bruising seemed to match fingertip marks, the complaint stated.

A doctor inquired Rantanen, who is documented as a sex offender, about the circumstances, to which he responded that Carter “was fine” when he was put down for a nap.

“Rantanen came back five minutes later and observed victim sitting up, slumped over, and limp,” the complaint said. “Rantanen picked up victim, noticed victim was not breathing at all, and called 911.”

According to Rantanen, Carter had been sick with a respiratory illness and was scheduled for a medical appointment “in the near future.” The boy’s mother told investigators that she came home between work shifts on the day of his death to say “hi” to him and Rantanen, and Carter seemed completely fine.

“Victim was eating and doing well,” the complaint said, citing interview statements from Carter’s mom.

First responders and doctors tried “rapid and extensive medical intervention” involving three different medical centers following Carter’s hospitalization, but he would eventually succumb to his head injuries on Feb. 24, 2024, according to prosecutors. Local medical providers testified during Rantanen’s trial that Carter had suffered from “abusive assault and inflicted trauma,” with the medical examiner determining that Carter’s cause of death was blunt-force trauma and the manner of death was homicide. A mattress belonging to a “pack and play” was found inside Rantanen’s home that contained “suspected blood,” per the complaint.

The attorney’s office reported in May 2025 that Carter suffered “severe brain injuries” at the hands of Rantanen.

“Based on the nature of Carter’s injuries, the government argued that Rantanen was the only person with means and opportunity to commit the murder,” prosecutors said Monday. “The jury agreed, convicting Rantanen of both counts.”

U.S. Attorney Timothy VerHey says Rantanen abused and neglected Carter before eventually killing him.

“This toddler’s life was tragic,” VerHey said in the release. “His birth mother had arranged for him to be adopted by a loving family, but Rantanen insisted on having custody of Carter and all evidence suggests that, instead of loving and doting on and caring for Carter, Rantanen subjected him to months of abuse and neglect.”

The Justice Department says Carter’s prosecution is an example of the DOJ’s ongoing work to combat the Missing and Murdered Indigenous People (MMIP) Crisis, with the Bureau of Indian Affairs applauding everyone involved for helping to put Rantanen behind bars.

“For decades, Native American and Alaska Native communities have struggled with high rates of assault, abduction, and murder of tribal members,” the bureau’s website says.

“The conviction of Eugene Rantanen further ensures the public that this child predator and murderer will never again have the opportunity to harm another innocent young soul,” said Reuben Coleman, acting special agent in charge of the FBI Detroit Field Office, in a statement Monday. “To the family and loved ones of the innocent child, I extend my deepest condolences. The FBI in Michigan remains unwavering in protecting our children and reassuring our communities that justice will be served.”

Court records show Rantanen has already filed for an appeal in the U.S. Court of Appeals for the 6th Circuit. His lawyer did not respond to Law&Crime’s requests for comment.