by The Chicago Times Staff

July 15, 2021

CALEDONIA, WI — Authorities said Thursday that a Wisconsin gunman who killed a 22-year-old man while pumping gas shot himself in the head after exchanging gunfire with an undercover sheriff’s investigator.

According to the state Department of Justice, John McCarthy, 32, of Hartland, killed himself after encountering the undercover sheriff’s investigator at another gas station not far away in Caledonia on Tuesday.

McCarthy was identified as the shooter by the Racine County Sheriff’s Department on Wednesday.

McCarthy and the investigator were both shot before McCarthy fatally shot himself, according to the justice department.  The investigator, whose identity has not been revealed, is recovering in a Racine hospital from non-life threatening wounds.

McCarthy ambushed Anthon Griger, 22, of Elkhorn, at the Pilot Travel Center around 7:30 a.m. on Tuesday, according to Racine County Sheriff Christopher Schmaling. According to the sheriff it was an execution killing.  No motive has been discovered as of yet.

McCarthy rummaged through Griger’s pockets, according to Schmaling, before shooting multiple times at another person driving through the parking lot.

McCarthy then drove 2 miles to a Mobil station, according to investigators.  McCarthy approached the undercover investigator who was putting gas into his unmarked squad car with a revolver pulled.  Both parties exchanged gunshots.  According to the sheriff’s office, the investigator was shot multiple times, fracturing several bones surrounding his pelvis.

Griger’s death came as a shock to his family, according to a GoFundMe website.  Griger was a 2017 Franklin High School graduate known as “Nino” by his family and friends.