A Florida mother stands accused of suffocating her 4-year-old son and staging a scene with self-inflicted wounds, discovered by her teenage daughter returning from school in a tragedy that underscores the hidden failures in mental health awareness and family support systems.
Story Snapshot
- Diana Cullom, 43, charged with first-degree murder after her 16-year-old daughter found 4-year-old Finley dead in their St. Petersburg home on January 27, 2026
- Medical examiner confirmed suffocation as cause of death, correcting initial reports of stabbing, while mother suffered self-inflicted wounds in apparent suicide attempt
- Police found a note believed written by the mother at the scene; no prior domestic disturbance calls to the home indicated warning signs were missed
- Family ran local dentistry practice and recently listed home for sale, presenting outwardly normal appearance before tragedy struck
Teen Daughter Discovers Horrific Scene
The 16-year-old sister arrived home from school around 3:30 p.m. on January 27, 2026, to find her mother cradling her deceased 4-year-old brother Finley in bed at their Shore Acres neighborhood residence. Diana Cullom had visible stab wounds, with a knife on the floor and a handwritten note nearby. The teenager immediately alerted authorities, providing critical details that shaped the investigation. St. Petersburg Police transported Diana to Bayfront Hospital with non-life-threatening lacerations before booking her at Pinellas County Jail on first-degree murder charges early January 28.
Investigation Reveals Suffocation, Not Stabbing
Initial reports suggested stabbing as the cause of death, but the medical examiner confirmed on January 28 morning that 4-year-old Finley Cullom died from suffocation. This clarification shifted the investigation’s focus toward the mother’s deliberate actions rather than a violent struggle. Police Chief Anthony Holloway emphasized that preliminary evidence, including the note and scene staging, pointed toward Diana Cullom. The self-inflicted wounds appeared designed to create a misleading narrative, though authorities have not disclosed the note’s contents or Diana’s mental health history, citing the ongoing investigation.
No Warning Signs in Family Background
St. Petersburg Police Chief Anthony Holloway confirmed no prior dispatch calls to the Tanglewood Drive home, indicating the family had no documented history of domestic disturbances or intervention needs. Diana and her husband Damian Cullom co-owned the residence, recently listed for sale, and jointly operated Crescent Lake Family Dentistry where Diana managed office renovations to create a welcoming patient environment. This outwardly stable family structure masked whatever internal crisis led to the tragedy. The absence of warning signs raises serious questions about gaps in community mental health screening and support systems that might identify at-risk families before irreversible harm occurs.
Community and Law Enforcement Impact
The Shore Acres community expressed shock over the tragedy, with Chief Holloway noting that hearts were heavy throughout the neighborhood and police department. Officers with children felt particularly affected by the case, requiring victim services support alongside the teenage daughter who discovered the scene. Damian Cullom, the father and a local dentist, was notified post-incident and cooperated with investigators while processing unimaginable loss. The family’s remaining children face long-term trauma and potential child welfare scrutiny as criminal proceedings against Diana Cullom advance through Florida’s justice system, which could span years before resolution.
Sources:
Mother charged with murder, accused of suffocating 4-year-old son to death: St. Pete Police
Florida mother accused of murder after teen sister finds 4-year-old brother suffocated
St. Petersburg suspicious death investigation
