Diana Cullom murder case

Developing StoryLast updated APR 26
SUMMARY

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.

Timeline

Want updates on this thread?

Track this story

April 2026 — 2 developments

  1. Diana Cullom, accused of first-degree murder in the death of her 4-year-old son Finley, has been deemed incompetent to stand trial.

    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.

  2. 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 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

  1. During her court appearance, Diana Cullom was seen with visible self-inflicted stab wounds, and her husband, a dentist, was present in the courtroom.

    During her court appearance, Diana Cullom was seen with visible self-inflicted stab wounds, and her husband, a dentist, was present in the courtroom.

  2. Clearwater defense attorney Kevin Hayslett was identified as Diana Cullom's legal representative.

    Clearwater defense attorney Kevin Hayslett was identified as Diana Cullom's legal representative.

  3. 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.

    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.

  4. Online records show that the family's home was listed for sale one day prior to the incident.

    Online records show that the family's home was listed for sale one day prior to the incident.

  5. A note, believed to have been written by Diana Cullom, was found at the residence by her daughter.

    A note, believed to have been written by Diana Cullom, was found at the residence by her daughter.

  6. St. Petersburg police responded to the scene at 1760 Tanglewood Drive NE following a report of a per…

    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.