ST. PETERSBURG, FL – A teenager returned home from school to discover a devastating tragedy that left a local community stunned. Authorities say the scene inside the residence on Tanglewood Drive NE was one of unimaginable grief and horror: a young boy dead, his mother wounded and blood spattered throughout the home.
According to police, Diana Elizabeth Cullom, 43, is accused of killing her four-year-old son, Finley, before turning a knife on herself in what detectives believe was a series of coordinated acts. Officers responded at about 3:30 p.m. after receiving a report of bleeding at the address. Upon arrival, they found Cullom holding her son on a bed, both covered in blood, and Cullom suffering from wounds believed to be self-inflicted. Paramedics provided treatment, and Cullom was transported to the hospital for her injuries, which were determined not to be life-threatening. She has since been discharged from the hospital and booked into the Pinellas County Jail, where she faces a charge of first-degree murder.
Despite the scene initially indicating a stabbing, investigators determined that Finley had been suffocated with a plastic bag. The police later located a note, purportedly authored by Cullom, inside the residence, but officials declined to reveal its contents or discuss any possible motive behind the killing.
Family details emerged as the story unfolded. Cullom, a mother of four, helped her husband launch Crescent Lake Family Dentistry, where she was known for her involvement in both the business and charitable ventures. At the time of the incident, her husband—a local dentist—was not at home, and there were no other reported injuries among the children.
Interviews with neighbors pointed to a household that appeared, from the outside, to be warm and active, with children often seen playing outdoors. Information about Cullom describes her as dedicated to her family, involved in community projects, and passionate about outdoor activities, travel, and helping others. Her biography painted a picture of someone with wide-ranging interests, from construction and gardening to music and charity work.
The investigation continues, with detectives reviewing evidence and statements gathered at the scene. Cullom was read her Miranda rights and subsequently provided a statement to police, though officials withheld those details pending further inquiry.
As law enforcement pieces together a timeline of events, unanswered questions persist about what could have prompted such a tragedy. The note left at the scene may provide more insight in days to come, though for now, officials are keeping much of the information close to the vest.
Authorities stated no other family members were present during the incident, and there is no indication that anyone else was involved. The case remains an active homicide investigation.
In the meantime, the family’s friends and neighbors are left grappling with shock and disbelief, describing the loss of the young boy as deeply heartbreaking for the broader community. Police have asked for privacy on behalf of those affected as they work to understand how a seemingly ordinary day could end in such devastation.