[1] Marielle arrived at the Casa das Pretas, on rua dos Inválidos, in Lapa, to mediate a debate promoted by the Socialism and Liberty Party (PSOL) with young black women, around 7:00 pm.

[7] Forensics discovered that the 9mm caliber ammunition that killed the Rio de Janeiro councilwoman was from the same batch as part of the projectiles used in the largest massacre in the state of São Paulo.

The police are also investigating the hypothesis that Marielle's assassins had been monitoring the councilwoman through social networks, since she made a call on the Internet the day before the event on Rua dos Inválidos, from where she left before she was murdered.

The TV program also predicted - which would be days later confirmed by the police - that Marielle and Anderson were not killed by a pistol as investigators thought, but by a HK MP5 submachine gun, which are not easily seized from criminals, being used by elite troops.

Márcio Gordo - who would have taken the weapons from addresses linked to retired military police officer Ronnie Lessa, who is pointed out as the ringleader of the crime - hired him for a trip to the Tijucas Islands, to practice underwater fishing.

[22] By September, it was known, according to a report by the Security and Intelligence Coordination of the Public Prosecutor's Office of the State of Rio de Janeiro [pt], that Military Police reserve sergeant Ronnie Lessa, accused of the murder, was a militia leader in the west zone of Rio de Janeiro, owned a clandestine bingo parlor in Barra da Tijuca and planned, before his arrest, to expand his water distribution business to areas dominated by drug traffickers in the city.

[24] On June 30, the delegate in charge of the investigation into Marielle's death, Daniel Rosa, put an end to the suspicion that hung over the militia organization called Escritório do Crime [pt].

In addition, the body of Adriano da Nóbrega was exhumed, and forensics found contradictions between the autopsy findings and the accounts of the military police officers who killed him in official action.

[38] In July 2020, after the arrest of Carlos Augusto de Moraes Afonso, a businessman linked to the Free Brazil Movement, known on the Internet as Luciano Ayan, was discovered to be responsible for spreading a false news story that accused Marielle Franco of having had a relationship with drug dealer "Marcinho VP", as well as having ties to the Comando Vermelho criminal faction.

On that date, civil police officers and two prosecutors went to Queiroz's house to serve an arrest warrant, for his suspected involvement in the death of the councilwoman and her driver, and another search and seizure order, to collect possible evidence of the crime.

[40] On August 7, 2022, Ronnie Lessa, who was being held in preventive detention at the Campo Grande Maximum Security Federal Penitentiary, was sentenced to five years in prison for attempted international arms trafficking.

Furthermore, according to the text of the sentence, the imported material was intended to make it difficult to identify the origin of shots fired from AR-15 rifles, commonly used by criminal organizations that control vast territories in the city of Rio de Janeiro, where they terrorize, injure and kill residents and public security agents indiscriminately.

[42] On December 7, 2023, Luiz Paulo de Lemos Júnior, known as "Chupeta", was arrested for being identified by investigators as the driver of Ronnie Lessa, defendant in the murder of councilwoman Marielle Franco and member of the "Escritorio do Crime" faction.

[46][47][48] On March 27, the Brazão brothers were transferred to other prisons, Chiquinho was taken to Campo Grande and Domingos to Porto Velho, while delegate Rivaldo Barbosa remains imprisoned in the capital of Brasília.

"[50][51][52] On May 9, the Attorney General's Office (PGR) indicted brothers Domingos and Chiquinho Brazão and police chief Rivaldo Barbosa for ordering the murder of councilwoman Marielle Franco.

[53] Later, on May 28, the Rio de Janeiro courts convicted former police officer Rodrigo Ferreira, known as "Ferreirinha", and lawyer Camila Nogueira for obstructing the investigation into the murder of city councilwoman Marielle Franco and driver Anderson Gomes.

[62] The National President of the Brazilian Bar Association, Claudio Lamachia, issued a note on March 15, in which he denounced the assassination as a crime against society as a whole and a direct offense to the values of the democratic rule of law.

[63] The Portuguese Parliament unanimously approved a vote of regret for the death of Franco, expressing "the strongest condemnation of the violence and political and hate crimes that increase every day in Brazil".

The vote was announced on the day of the crime by the leader of the Left Bloc, Catarina Martins, during the fortnightly debate with the prime minister, and was endorsed by the president of the Parliament, Ferro Rodrigues, and by the deputy André Silva, in a text that highlighted the political militancy of the councilwoman in favor of minorities and for denouncing police violence.

In a message written on Facebook, the judge said that Marielle was not only a militant, but that she was engaged with criminals, had been elected by the Red Command and had failed to comply with campaign agendas, consequently being murdered for not paying debts.

At the same time, a smaller portion of web users made demonstrations against the left and defended tougher security measures, also criticizing the political exploitation of the case by the PSOL.

[71][72][73] Another manifestation was that of the director José Padilha, who said that the violence in Rio de Janeiro was a recurrent process, in which an enormous number of people were silently murdered in the last twenty years.

He concluded by reminding that the problem only received progressive media attention, bringing to light the underlying situation, when a serious case happened, like the death of the councilwoman, the Candelária and Vigário Geral massacres.

Magistrate Gustavo Gomes Kalil, head of the Fourth Criminal Court of Rio de Janeiro, accepted the request, ruling that Rede Globo leaked the contents of the case file in a "prejudicial" manner, exposing data from the investigations and witnesses.

[77]Writing for the Analysis & Opinion column at Jornal Já [pt], journalist, former executive editor of Exame magazine, editor and director of Gazeta Mercantil [pt], and editor-in-chief of Jornal da Globo, José Antônio Severo,[78] criticized the fact that the case was not questioned by the press until March 2020: It was necessary for FGV and UnB professor Nelson Barbosa to come down from his chair and put his finger on the wound with the big question: why was Marielle Franco killed?

The day after the column by former Finance and Planning Minister of President Dilma Rousseff in Folha de S.Paulo, it seems that the media woke up and on Saturday's pages dotted with references to the unexplained motives for the crime.

Certainly in the times of the great police reporters of the past, such as the late Pena Branca (Otávio Ribeiro), Vanderlei Soares or the still active Percival de Souza [pt], in his days at Jornal da Tarde, this issue would have already been raised in the investigative journalism pages.

[80] According to an exclusive report on October 29, 2019, broadcast by Jornal Nacional, which had access to details of the case, the name of the President of the Republic was mentioned in a statement made by the doorman of the Vivendas da Barra Condominium, where Jair Bolsonaro and Ronnie Lessa, one of the main suspects of having murdered Marielle Franco and Anderson Gomes, live.

When you got to the government, the first thing you did was to make an enemy of him".The President also accused the Rio Civil Police of having orchestrated a "farce" and said he believed that the doorman may have been led to sign something that did not correspond to his true statement.

[96] On May 4, 2020, the governor of Rio de Janeiro, Wilson Witzel, admitted in an interview on the program Roda Viva, on TV Cultura, that he interfered in the Civil Police operations in relation to the suspects of the attack.