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Background: A section of Delafield Street in Waukesha, Wisconsin (Google Maps). Inset left: Ronnie Fuentez (Waukesha County Jail). Inset right: Adam Thompson (Randle-Dable-Brisk Funeral Home).
A jury in Wisconsin has determined that a teenager fatally assaulted his uncle after a disagreement over allowing a friend to stay overnight. The incident led to the tragic death of 46-year-old Adam Thompson.
On Thursday, Ronnie Fuentez was convicted of felony murder stemming from a battery, as per Waukesha County court documents reviewed by Law&Crime. Additionally, he faced a charge for misdemeanor bail jumping.
The altercation occurred on February 1, 2025, within the apartment Fuentez, then 17, shared with Thompson on Delafield Street in Waukesha, a suburb to the west of Milwaukee. They had cohabitated for approximately four years, according to the criminal complaint.
The conflict erupted around 10 p.m. when the two argued over Fuentez’s request for a friend’s overnight stay, which Thompson refused. This refusal triggered Fuentez’s anger. Thompson instructed his nephew and housemate that the friend must leave, prompting Fuentez to strike him in the head with a closed fist.
In response, Thompson claimed he hit Fuentez back in self-defense but soon raised his arms to shield his head as Fuentez continued the assault, reportedly shouting expletives and expressing long-held hostility towards his uncle.
Fuentez left the home and didn’t come back until the next morning. It is unclear where the friend was during the incident.
Thompson did not call the police, nor did he feel any “immediate injuries,” but two days later, “he developed a migraine in the afternoon.” He said he took over-the-counter medication, which helped, but the migraine persisted, and on Feb. 5, 2025, he called his mother, authorities recounted.
“While talking on the phone, [Thompson] began to struggle with speaking in complete sentences,” the court document said. The victim’s mother thought he was having a stroke and drove over to his home “to make sure he was ok.” She then drove him to Waukesha Memorial Hospital, where nurses told Thompson “he had an internal brain bleed.”
He was placed in the intensive care unit.
Thompson was “able to speak,” but he was “unable to form complete sentences and struggled to find his words due to internal bleeding in his brain,” the complaint said. Still, he told authorities at the hospital what happened, and a Waukesha police officer responded, learning that Fuentez had “punched him multiple times in the head area.”
As Law&Crime previously reported, Fuentez was originally charged with battery — but that charge was later upgraded to murder when Thompson died on Feb. 17, 2025. It also appeared that Fuentez’s attack on his uncle took place while he was out on bond after being released for an unrelated crime the previous September.
Thompson’s obituary says he was “an avid gamer, a reptile enthusiast, having many reptiles in his home, loved his dog ‘Boy’ and most of all loved his family enjoying every family gathering.”
Fuentez is scheduled to be sentenced on April 27.