Independent report points to the murder of PC Siqueira by strangulation and changes the direction of the investigation

A technical document prepared at the request of the family of digital influencer PC Siqueira brought a twist to the investigation into his death. The private opinion, finalized in March 2026, states that he was the victim of murder by strangulation using a headphone cord. The conclusion directly challenges the official reports issued by Instituto Médico Legal and Instituto of Criminalística. State agencies had registered the case as suicide by hanging. The body of the 37-year-old influencer was located inside his apartment, located at Zona Sul in the capital of São Paulo, on December 27, 2023.

The technical divergence forced a change in the investigation. Ministério Público intervened in the process and ordered Polícia Civil to carry out a new battery of complex tests. Official experts were tasked with analyzing the wire. The main investigation ended in 2024 with the thesis of suicide. Pressure from Promotoria ensured the reopening of the case in late 2025.

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Divergência on cause of death and injury analysis

The person responsible for the new analysis is the private expert Francisco João Aparício La Regina. The professional worked at Polícia Técnico-Científica for three decades and used his experience to write a 48-page document. The text directly contests the dynamics established by the official state report. The expert argues that the asphyxiation suffered by the influencer occurred due to the constriction of a thin wire. The state version maintains that the death occurred by hanging with an orange ratchet strap, which was at the scene of the events.

The marks left on the victim’s neck represent the central point of disagreement. The independent opinion indicates that the injuries are fully compatible with the black wire of the headphones found in the property. The analysis details that the geometric pattern and width of the skin lesions do not match the dimensions of the ratchet strap. The larger object was the only item collected and examined by the official teams during the initial response to the incident.

The collection of the black thread occurred after the release of the scene. Lawyers Caio Muniz and Geraldo Bezerra from Silva Filho, legal representatives of the family, delivered the material directly to the 11th Distrito Policial, located in the Santo Amaro neighborhood. The private technical document focuses only on the dynamics of the death and does not identify suspects responsible for the alleged homicide. The defense and the hired expert avoid public statements about the progress of the work. Professionals justify the silence based on the secrecy of Justiça imposed on the investigation.

Relatos of witnesses and the scene in the apartment

Polícia Técnico-Científica released its original conclusion in 2025, based on elements collected in the first hours after death. The official report describes that PC Siqueira took his own life in the presence of Maria Luiza Lopes Watanabe, with whom he had a relationship. The statements recorded at the police station indicate that the influencer verbalized his intention to commit the act. The witness reported to investigators that he did not have the physical strength to prevent the action with the ratchet strap.

Maria Luiza detailed his reaction during the formal testimony. Ela stated that he tried to intervene in the situation, but failed to save his ex-partner. The young woman ran into the hallway. Lá, screamed for help repeatedly. A neighbor on the same floor confirmed that she heard the calls for help and entered the apartment immediately. The resident came across the suspended influencer and called Polícia Militar. The witness also reported that he took a knife from the kitchen and cut the belt in an attempt to provide first aid.

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The context of the relationship is also included in the pages of the police investigation. The couple had officially ended their relationship just two days before the death was recorded. Pessoas from the influencer’s circle of friends gave statements and described a relationship marked by frequent friction. Algumas of these discussions were broadcast live to thousands of followers on digital platforms.

Ministério Público demands new lines of investigation

The filing of the case met with direct resistance from the state Ministério Público. The prosecutors responsible for analyzing the investigation identified contradictions in the testimonies given by witnesses. The body also questioned the solidity of some points in the reports prepared by state experts. Justiça accepted Promotoria’s arguments at the end of 2025 and blocked the definitive closure of the process. The decision forced the police to resume investigative measures.

The reopening of the investigation expanded the scope of police work. Promotoria determined the investigation of three new criminal hypotheses:

• Instigação or suicide aid.
• Homicídio qualified with suicide scene simulation.
• Omissão of assistance during the events in the apartment.

The 11th Distrito Policial researchers focus their current efforts on mapping the people who lived with the influencer. Agents cross-reference information and analyze communications history. Police authorities have not formally indicted any suspects until this stage of the investigation. The investigation is being carried out jointly between Polícia Civil, Ministério Público and Poder Judiciário.

Reconstituição of the facts and next steps of the investigation

The search for answers took Polícia Técnico-Científica back to the building in Campo Belo’s neighborhood. The experts organized a simulated reproduction of the events on January 20, 2026. The team used an articulated doll with the same weight and height as the influencer. The objective of the action was to test the physical viability of the versions presented in the statements. Maria Luiza was called up for the reconstitution, but justified her absence by citing personal issues.

The progress of the investigations required direct confrontation of the witnesses’ versions. Polícia Civil held a confrontation via videoconference on January 30, 2026. Maria Luiza and the neighbor who provided help were face to face on the screen. Delegates sought to clarify discrepancies over the exact timing of calls for help in the corridor. Investigators also questioned specific details about the position of the body and the objects present in the room. The result of this hearing will be included in the final report of the investigation.

The passage of time has imposed technical limitations on the work of coroners. The death occurred more than two years ago, a fact that makes it impossible to exhume the corpse for a new physical analysis of the injuries. State experts adopted an alternative strategy. The professionals will cross-reference the measurements of the headphone wire with the high-resolution photo bank taken on the day of the incident. Instituto Médico Legal is still working on preparing this complementary report.

The final positioning of the official experts will define the direction of the criminal process. Confirmation that the thread caused the marks on the neck will strengthen the murder thesis defended by the family. Maintaining the original suicide report will weaken the private opinion provided by the lawyers. Questions raised by Ministério Público will continue to require formal responses from Polícia Civil prior to any further filing attempts.