On the morning of Saturday, March 4, 2023, an Ozaukee County deputy on patrol in the rural Town of Grafton, Wisconsin, noticed a white Chevrolet Malibu in a ditch off Highway C. The car’s windows were dark with soot, and a closer look revealed that a fire had started inside the vehicle before extinguishing itself. Within the car, authorities made a grim discovery: the body of Laeng Sanavongsay, a 49-year-old man.
Mr. Sanavongsay, who was from Texas and had no apparent ties to the area, had been the victim of a brutal killing. An autopsy would determine his cause of death was a gunshot wound to the head. Investigators found him with tape over his mouth, ligature marks on his wrists, and several broken ribs. The death was immediately investigated as a homicide, which authorities believed was a targeted and isolated attack. The car he was found in, which had Michigan license plates, was a rental he had picked up in Illinois the day before his body was discovered.
The investigation into the murder was painstaking. Detectives retraced Mr. Sanavongsay's final hours, learning he had flown from Texas to Chicago’s O’Hare International Airport on March 3. He rented the Malibu and drove north toward Milwaukee, with his cell phone data showing his movements through the city and to a residence in New Berlin before the phone went off the network late that night. By tracking the victim's phone and the rental car's data, and by obtaining warrants for cell tower information, investigators identified another device that followed the same path.
The electronic trail led authorities to Miguel Aponte, a 34-year-old man from New Berlin. DNA evidence found in the rental car also matched Aponte. On September 26, 2023, nearly seven months after the discovery of Mr. Sanavongsay’s body, Aponte was arrested in Milwaukee. He was charged with first-degree intentional homicide, false imprisonment, attempting to disfigure a corpse, and felony bail jumping. When questioned, Aponte admitted to being with the victim on the night of the murder but denied being present for the killing or ever being inside the car.
In January 2026, Miguel Aponte faced an Ozaukee County jury. After a five-day trial and less than four hours of deliberation, the jury found him guilty of first-degree intentional homicide and felony bail jumping. He was acquitted of attempting to disfigure a corpse, and a charge of false imprisonment was dismissed by the prosecutor.
Aponte was sentenced in March 2026. A judge ordered him to serve life in prison, with the possibility of petitioning for extended supervision after 40 years. He was also given a consecutive one-year sentence for the bail jumping conviction. While Aponte was convicted as a party to the crime, prosecutors stated their belief that he did not act alone and had an accomplice.