Diana Cullom murder case
Diana Cullom, accused of first-degree murder in the death of her 4-year-old son Finley, was deemed incompetent to stand trial on April 1, 2026, in Florida. As of April 1, 2026: Cullom will undergo treatment, and legal proceedings will resume once she is deemed competent. Prosecutors had previously announced their intention to seek the death penalty for Cullom, who made her first court appearance via video on January 28, 2026, and was held without bond. St. Petersburg police responded to 1760 Tanglewood Drive NE on January 27, 2026, where they found blood throughout the house and a note believed to be written by Cullom.
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April 2026 — 2 developments
Diana Cullom deemed incompetent to stand trial in son's murder case
Diana Cullom, accused of first-degree murder in the death of her 4-year-old son Finley, has been deemed incompetent to stand trial. She will undergo treatment, and legal proceedings will resume once she is deemed competent. Prosecutors had previously stated their intent to seek the death penalty.
Florida Prosecutor Seeks Death Penalty for Diana Cullom in Son's Suffocation
A Florida prosecutor announced the state's intention to seek the death penalty for Diana Cullom, accused of suffocating her 4-year-old son, Finley. A status hearing is scheduled for April 20, 2026, to review her competency evaluation.
January 2026 — 6 developments
Diana Cullom appears in court with self-inflicted stab wounds
During her court appearance, Diana Cullom was seen with visible self-inflicted stab wounds, and her husband, a dentist, was present in the courtroom.
Clearwater attorney Kevin Hayslett identified as Diana Cullom's legal representative
Clearwater defense attorney Kevin Hayslett was identified as Diana Cullom's legal representative.
Diana Cullom ordered held without bond, prohibited from contacting daughter
Diana Cullom made her first court appearance via video, where a judge ordered her to be held without bond and prohibited her from contacting her 16-year-old daughter.
Family's Home Listed for Sale Day Before Incident
Online records show that the family's home was listed for sale one day prior to the incident.
Diana Cullom's daughter finds note believed to be written by her mother at residence
A note, believed to have been written by Diana Cullom, was found at the residence by her daughter.
St. Petersburg Police Find Blood Throughout House on Tanglewood Drive
St. Petersburg police responded to the scene at 1760 Tanglewood Drive NE following a report of a person bleeding. Officers found blood throughout the house.