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Months After Murders, Plant City Police Say Woman Killed Her Mother, 2 Children Before Taking Own Life

Investigators said digital evidence and camera footage showed Haley Dempsey killed three relatives before shooting herself, while her 2-year-old daughter survived.

  • The Plant City Police Department concluded Thursday that the May 3 shooting was a murder-suicide, with 27-year-old Hailey Dempsey killing her mother and two of her three children before taking her own life.
  • Surveillance footage showed Dempsey leaving her residence at 5:35 a.m. on May 3 with her three children after fatally shooting her mother inside the home in Hillsborough, Florida.
  • Digital evidence pointed to possible mental illness as investigators reconstructed her movements through neighborhood security cameras and Ring doorbell recordings. Husband Jay Dempsey was ruled out as a suspect after detectives confirmed he was traveling on Interstate 4 during the incident.
  • Plant City Police Chief Richard Mills said the department withheld investigative details to protect witness statements and evidence integrity. "This is a tragedy that has deeply affected two families, our community, and the men and women of the Plant City Police Department," Mills said.
  • Authorities found the surviving 2-year-old daughter at the scene approximately 50 minutes after the shootings on West Tever Street. Those in crisis can contact the National Suicide Prevention Lifeline at 988 or call 911 for immediate help.
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An American woman committed suicide last May in Florida after killing her two children and her mother. We learn three months later that she would have had an argument with her husband just before the drama about the...

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WFLA-TV broke the news in Tampa, United States on Thursday, August 13, 2026.
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