The remains of one of the two bodies found in the remote Amazon rainforest are those of UK journalist Dom Phillips, Brazilian police confirm.
They say the identification was based on dental records.
The second body – believed to be that of indigenous expert Bruno Pereira – is still being examined.
Mr Phillips, 57, and Mr Pereira, 41, were first reported missing on 5 June. Earlier this week, a suspect confessed to burying the bodies.
The suspect was later named as Amarildo da Costa de Oliveira. The police said he had explained in detail how both men were killed before leading officers to the place where their bodies were buried.
Human remains were then dug up.
The suspect’s brother, Oseney da Costa de Oliveira, has also been arrested in connection with the killings, but denies any involvement.
Mr Pereira had been introducing the journalist – who was writing a book on the Amazon – to contacts and acting as his guide when their boat failed to arrive at an expected point near the border with Peru.
The search for the missing pair was initially criticised by relatives and campaign groups, who called on officials to act more quickly and broaden its scope.
As global outrage grew at the disappearance, the 10-day search expanded until it involved the army, navy and police.
The police also initially failed to praise the work of the indigenous communities who searched for the men and helped lead authorities to some of their belongings.
When asked by the BBC why there was no mention of the local communities helping, they admitted it was an error and conceded that their support had been crucial.
