The courtroom drama surrounding the passing of world champion jiu-jitsu Leandro Lo is set to unfold over just two days this week, marking a groundbreaking moment in Brazilian legal proceedings as both prosecution and defense teams prepare to present AI-generated recreations of the fatal incident.
Nearly three years after the tragic shooting at São Paulo’s Club SÃrio, military police officer Henrique Velozo faces trial for the homicide that stunned the martial arts community. The proceedings, which began yesterday—Tuesday—at 10 AM in courtroom 6 of the Barra Funda Criminal Forum, represent a remarkable convergence of traditional justice and cutting-edge technology.
Judge Roberto Zanichelli Cintra of the 1st Jury Court is overseeing the case which prosecutors expect to conclude by Wednesday. Eleven witnesses have been called to testify and the defendant will also be interrogated before the jury deliberates on Velozo’s fate.
What makes this trial particularly noteworthy is the unprecedented use of artificial intelligence and computer graphics to reconstruct the events of August 7, 2022. Both legal teams have created sophisticated digital presentations showing their interpretation of what transpired that evening.
The prosecution’s AI-generated video depicts Velozo, who was off-duty and in civilian clothes, engaging in a confrontation with Lo during a Pixote concert at the club. According to their reconstruction, the grappler immobilized the officer with a martial arts technique before Velozo drew his weapon and shot Lo in the head. The video then shows the officer approaching the fallen man and kicking him before fleeing the scene.
Defense attorney Claudio Dalledone has countered with his own computer-animated presentation which portrays a dramatically different sequence of events. In the defense’s version, Lo is shown as the aggressor who applied what Velozo describes as a “baiana” (double leg takedown) hold followed by a chokehold that allegedly caused the officer to lose consciousness.
“In these three years the grappler’s family gave their version of the case. We have robust evidence in the case that my client was provoked,” Dalledone stated. He emphasized that his team would utilize “any technological resources that can help clarify the case to the jurors.”
The defense maintains that Velozo acted in self-defense after being attacked and immobilized. According to their account, when the officer regained consciousness and drew his weapon as a warning, one of Lo’s five companions attempted to grab the gun causing it to discharge accidentally and strike the champion.
“The trial will be the opportunity for us to show that the truth is that Lieutenant Velozo was attacked first, immobilized and lost consciousness with the chokehold that was applied in the middle of the party,” Dalledone explained. “My client acted in legitimate self-defense against the aggressions and the truth will be reestablished.”
The prosecution, however, paints a starkly different picture. Prosecutor João Calsavara seeks a conviction on charges of aggravated homicide with three qualifying factors: base motive, common danger (putting others at risk) and using means that hindered the man’s defense. These charges carry an expected sentence of at least 20 years in prison.
The absence of security camera footage capturing the actual incident has made these AI reconstructions particularly significant. Despite Club SÃrio having surveillance systems, none recorded the crucial moments of the confrontation. This gap has forced both sides to rely on witness testimony and forensic evidence to build their cases.
The forensic report includes photographs from a case reconstruction based on witness statements along with a 3D diagram of the location. Notably, Velozo did not participate in the official reconstruction process.
Leandro Lo’s passing sent shockwaves through the martial arts world. The 33-year-old grappler had claimed eight world championships throughout his career with his first title coming in 2012 in the lightweight division and his final victory in 2022 in the middleweight category.
The trial represents a pivotal moment not only for the families involved but also for the Brazilian legal system’s embrace of emerging technologies in legal proceedings. As both sides prepare to present their technologically enhanced arguments, the jury will face the challenging task of determining which digital recreation more accurately reflects the tragic events that ended a champion’s life.
Velozo remains in preventive custody as the legal proceedings unfold with his fate now resting in the hands of a jury that will witness one of the most technologically sophisticated homicide trials in recent Brazilian history.
