A man who tried to storm the Supreme Court in Brazil’s capital, Brasilia, on Wednesday evening is believed to have been killed by his own explosives.

Police named the man as Francisco Wanderley Luiz, who ran unsuccessfully in council elections for former President Jair Bolsonaro’s Liberal Party (PL).

He was found dead outside the building shortly after two explosions shook the area. People around said they saw him throwing things that looked like explosives before the explosion. Authorities said no one else was injured in the incident.

The area has been quarantined and a bomb disposal robot is being used to search for the man’s body. Police said they detected a timer possibly connected to other devices.

Brazil’s attorney general, Jorge Messias, condemned what he said was a deliberate attack and promised a full investigation into the explosions.

“I strongly condemn the attacks on the Supreme Court and the lower house,” he said in the statement he sent to X.

“We need to find the motivation behind the attacks and restore peace and security as quickly as possible.”

Police identified the man as Francisco Wanderley Luiz. Local media reports say he is from Rio do Sul in the southern state of Santa Catarina and served as a council member of the PL in 2020 but received only 98 votes.

Fabio Wajngarten, Bolsonaro’s advisor, wrote about X: “There are crazy people everywhere, on every political spectrum, every team, every creed and religion.”

Footage cited by news agencies showed the dead man lying in an area outside the High Court as officers cordoned off the area.

“The Military Police robot is searching for the body of the attacker and a timer has been detected and is likely linked to other explosives,” police spokesman Maj Raphael van der Broocke said.

“Other explosives were also detected around the body,” he added. “We need to be very careful while conducting this search and, if necessary, not to cause a chain reaction by detonating these explosives in the area.”

Brasilia Deputy Governor Celina Leão told reporters that the explosion occurred after a man approached the entrance of the Supreme Court but was unable to enter. He recommended that parliament remain closed on Thursday while investigations continue.

“He could have been a lone wolf like the others we’ve seen around the world,” he told reporters, according to the AP news agency.

“We consider this a suicide because there was only one victim. However, investigations will show whether this is really the case.”

An eyewitness said he saw a man waving at him before throwing an explosive device at the Supreme Court justice building.

“I was at the bus stop and this guy just said hello and nothing else,” Lavana Costa told TV Globo.

“Then we heard the noise. I looked at the noise and saw fire and smoke. Supreme Court (STF) security guards came… He had already thrown something at the statue of justice.

“As STF security guards approached, he threw something again. Just then, the gun exploded and he fell to the ground.”

The Supreme Court had previously announced that the building was evacuated as a “precautionary measure” after the explosions were heard. The statement stated that the judges had just finished their plenary session and were quickly evacuated safely.

The court is located in Praça dos Três Poderes, or Three Powers Plaza, in the square opposite the presidential offices. Local media reported that President Luiz Inácio Lula da Silva left the area shortly before the explosions.

The explosions took place just a week before Chinese President Xi Jinping visited the capital following his visit to the G20 summit in Rio de Janeiro.

Last year, the square was the scene of mass unrest after Bolsonaro supporters looted buildings days after President Lula took office.