Dog the Bounty Hunter’s Stepson Gregory Zecca Shoots and Kills His 13-Year-Old Son in ‘Tragic Accident’

Duane “Dog” Chapman’s stepson Gregory Zecca allegedly shot his 13-year-old son Anthony, leading to the teenager’s accidental death.

The Dog the Bounty Hunter alum’s family member was killed during an accidental shooting at an apartment in Naples, Fla., on Saturday, July 19, TMZ reported.

The Collier County Sheriff’s Office confirmed in a statement to PEOPLE that deputies responded to a call about a shooting around 8 p.m. local time. Authorities called the tragedy an “isolated incident” and said they haven’t made any arrests.

The sheriff’s office said they are “conducting a thorough investigation looking into all the elements” of the incident. “The investigation includes statements from witnesses who were at the scene, forensic testing, subpoenas and search warrants,” they told PEOPLE in a statement.

Dog, 72, and his wife, Francie Chapman — who is Zecca’s mother — told TMZ, through a representative, “We are grieving as a family over this incomprehensible, tragic accident and would ask for continued prayers as we grieve the loss of our beloved grandson, Anthony.”

Representatives for the couple did not immediately respond to PEOPLE’s request for comment on Sunday, July 20.

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Zecca is Francie’s son from her previous marriage. She and Dog married in 2021, after they bonded over their shared grief following the death of their respective spouses. (Beth Chapman, Dog’s fifth wife, died at age 51 in June 2019.)

According to TMZ, Zecca works with Dog on his bounty hunting team.

Dog is a father to 13 children total. He shares son Christopher with Debbie White, sons Duane Lee II and Leeland with ex-wife Fonda Sue Darnell, and sons Wesley, James Robert and the late Zebadiah with ex-wife Anne Tegnell.

He is also a dad to Tucker, Lyssa and the late Barbara with ex-wife Lyssa Rae Brittain, and he shared daughters Bonnie and Cecily and son Garry with late wife Beth.

The reality TV star revealed in 2023 that he recently discovered that he fathered a son named Jon.