Overview
- Lidia Argüello, the victim’s sister, was arrested as the principal suspect following new forensic and investigative findings.
- An autopsy reported a single .32‑caliber gunshot to the right parietal area, shifting the case from a suicide hypothesis to a violent‑death inquiry.
- Police seized a .32 revolver during a search of the sister’s home, with ballistic comparisons to recovered metal fragments underway.
- Security footage shows Julio César Argüello arriving agitated around 6:20 and his sister arriving roughly 20 minutes later, a sequence central to the timeline.
- The file remains under the “doubtful death” label in Juzgado de Instrucción N°7, as investigators review a ransacked scene with no weapon found and inconclusive residue on the victim’s hands.