Cold Case: Green Cove Springs Man Killed in 2009

Police continue to investigate the unsolved murder of Mark Gregg, who was found shot to death in his home 14 years ago.

Apr. 18, 2026 at 6:36pm

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An extreme close-up of a shiny, metallic shotgun barrel and revolving cylinder, dramatically lit to create a stark, gritty investigative aesthetic.A key piece of evidence in the decade-old homicide investigation of Mark Gregg is the shotgun believed to be the murder weapon.Green Cove Springs Today

On April 18, 2009, 54-year-old Mark Gregg was found shot to death in his North Road home in Green Cove Springs, Florida. Evidence at the scene indicated suspicious circumstances, as Gregg was shot multiple times with a distinctive-looking shotgun believed to be his own.

Why it matters

This unsolved homicide case has remained open for over a decade, leaving Gregg's family and the local community seeking closure and justice. The investigation into Gregg's murder could provide important insights into crime patterns and policing challenges in the Green Cove Springs area.

The details

Police reported that Gregg was shot multiple times with a shotgun, specifically an Armsel Striker 12-gauge shotgun with a revolving ammunition cylinder. Evidence at the scene suggested suspicious circumstances, but no arrests have been made in the 14 years since Gregg's death.

  • On April 18, 2009, Mark Gregg was found shot to death in his home.

The players

Mark Gregg

A 54-year-old resident of Green Cove Springs, Florida who was found shot to death in his home in 2009.

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What’s next

Police continue to investigate this cold case, hoping new leads or evidence may emerge to help solve Gregg's murder.

The takeaway

This unsolved homicide case highlights the challenges law enforcement faces in cracking difficult cases, even years later, and the lasting impact such tragedies have on local communities seeking closure.