SAO PAULO — A Brazilian Supreme Court justice said Thursday that he believes the explosion outside the court in capital Brasilia was the consequence of frequent far-right attacks and hate speech targeting the country's institutions.
''It grew under the guise of a criminal use of freedom of speech. To offend, threaten, coerce," Justice Alexandre de Moraes said at an event in Brasilia.
Federal Police are investigating the explosions on Wednesday as terrorism and a violent attack on the democratic rule of law, its director, Andrei Passos Rodrigues, said at a news conference later.
He said that the man had attempted to enter the Supreme Court and that it appeared that he acted alone, though the police official indicated he also was viewing the attack in the broader context of extremism.
''Even if the visible action is individual, behind that action there is never just one person. It's always a group, or ideas of a group, or extremism, radicalism, that lead to committing those crimes,'' Passos Rodrigues said. ''The action, in fact, was an individual action, but the investigation will tell if there are other connections, if there are other networks, what's behind it, what drove it.''
The police director also said the Supreme Court has received fresh threats via email, without specifying when.
Security camera footage provided by the Supreme Court shows the suspect approaching a statue outside the building. As a guard nears, the man throws an explosive and retreats a few steps, then throws a second device and an explosion follows. Finally, the suspect ignites a third device near to himself, causing his death.
Passos Rodrigues said that the man was a native of southern Santa Catarina state where he previously ran for city council, and had been in Brasilia several months. Police went to his Brasilia residence Thursday and used a robot to open a drawer that triggered ''a very serious explosion,'' he said.