Dayveon Lathrop, now 22, faces first-degree intentional homicide and hiding a corpse charges after allegedly stabbing his 8-year-old adopted sister to death in their Rock County, Wisconsin home on March 9, 2024, and concealing her body in a laundry room tote. He was the only one home with her when their father returned from errands and confronted him; Lathrop bluntly admitted, “She is dead,” claiming memory loss from being drunk and high on marijuana. A jury trial is now set for July 2026 following his third competency hearing on December 29, 2025, where he was ruled competent after prior commitments to a mental health facility.
Incident and Arrest
Witnesses reported seeing Lathrop arguing verbally with his sister around 4:30 p.m. that day. Police found two knives in a shower before discovering her stabbed body; he was arrested immediately. Initial questions about his mental fitness delayed proceedings, including a postponed July 2025 trial.
Legal Proceedings
After pleading not guilty, competency evaluations flipped: ruled fit in May 2024, unfit later leading to treatment, then competent again this week. He remains in Rock County Jail awaiting a May 8, 2026 pretrial hearing. No additional updates on pleas or evidence appear in court summaries.
