Brazil officially has a new but familiar president as Luiz Inacio Lula da Silva was sworn in for the third time.
The leftist politician, known as Lula, had held Brazil’s highest office between 2003 and 2010.
He enters office having defeated far-right candidate Jair Bolsonaro in October with concern surrounding the Brasilia inauguration ceremony amid fears Bolsonaro supporters may try to disrupt proceedings.
A man carrying an explosive device and a knife had been arrested while attempting to enter the inauguration in the Brazilian capital city, according to military police.
Up to 300,000 people have gathered along the esplanade to celebrate following a ceremony in Brazil’s congress.
There had also been concern over Mr Bolsonaro’s willingness to accept the results of the tightest presidential race in more than 30 years as political opponents resisted his taking office.
The vote was won by less than two percentage points and Mr Bolsonaro spent months sowing doubt about the reliability of Brazil’s electronic voting system.