Human Rights Watch Says Rio Raid Was Marred by Body-Camera Tampering and Forensic Failures

Human Rights Watch said in a yearlong investigation published Wednesday that officers in Rio de Janeiro’s deadliest police raid systematically tampered with body cameras and failed to preserve evidence, creating fresh grounds for independent criminal and civil investigations into possible unlawful killings during the operation.

The raid, known as Operation Containment, took place Oct. 28, 2025, in Complexo da Penha and Complexo do Alemão, low-income neighborhoods in Rio de Janeiro. Human Rights Watch said 122 people were killed, including two children and five police officers, though official Rio state tallies at the time varied slightly and often cited about 121 deaths.

The findings carry particular weight because body cameras were already required in high-risk operations under Rio state law and orders from Brazil’s Supreme Court aimed at reducing police killings. Yet Rio state authorities mobilized about 2,500 civil and military police officers for the raid, and the state government said only about 23% of them wore body cameras that day, with government filings citing 569 cameras in the operation. Human Rights Watch said none of the killings appeared in the footage it reviewed.

In its report, “A Strategy of Death: Investigating Brazil’s Deadliest Police Operation,” Human Rights Watch said it reviewed 4,400 hours of body-camera footage, 9,000 pages of official investigation files and 122 autopsy reports, and interviewed 41 witnesses, relatives and experts. The group said it used machine learning tools along with manual review to analyze the material. Its analysis of footage from 527 military police officers found widespread apparent tampering, with officers allegedly leaving cameras running before the operation to drain batteries, covering lenses, positioning cameras so they would not record officers’ actions, or leaving cameras in vehicles. Human Rights Watch said it documented more than 250 camera obstructions and found that 36% of gunshot clusters heard on police cameras occurred while the cameras were obstructed.

The rights group said the pattern of missing or obstructed footage appeared during arrests, shootouts and entries into homes, and argued that the raid “appeared lethal by design.” Authorities had said the operation’s purpose was to serve warrants against alleged members of Comando Vermelho, or Red Command, one of Brazil’s most powerful criminal groups. But Human Rights Watch said police records showed officers arrested only 17 people for whom they had warrants and did not enter the home of the local Red Command leader even though they had a warrant for him.

Human Rights Watch also described major forensic failures after the raid. It said police did not properly preserve crime scenes, and that Civil Police collected basic identifying information for only two of the 117 non-police victims. The report said only seven suspects were taken to a hospital and then arrested, compared with 117 people killed by police, a ratio the group said raises questions about whether officers prioritized lethal force over arrests.

Autopsy patterns cited in the report added to those concerns. Human Rights Watch said more than 40% of non-police victims were shot in the head, more than 60% were shot four or more times, and nearly 75% were shot at least once in the back. The group said independent forensic experts it consulted found some wound trajectories consistent with executions. It also said 85% of the non-police victims were Black.

Human Rights Watch, citing Brazilian security research groups and media reports, said Operation Containment was the deadliest documented one-day police operation in Brazil. The Inter-American Commission on Human Rights, a body of the Organization of American States, has also treated it that way. The report lands against a broader backdrop of chronic police violence in Brazil, where police forces kill more than 6,000 people a year, according to public security data cited by the group.

The organization called on federal and state prosecutors to open criminal and civil proceedings, including into the actions of senior officials and police commanders. Sophia Jones, a Human Rights Watch open source researcher, said: “The families of those killed, including police officers, deserve answers and accountability with a thorough, independent investigation.”