RIO DE JANEIRO — The Brazilian authorities said on Tuesday that they had arrested a second man in the disappearance of a British journalist and a Brazilian expert on Indigenous people deep in the Amazon, confirming that their efforts were shifting from a search-and-rescue operation to a homicide investigation.
The Brazilian federal police said they had arrested Oseney da Costa de Oliveira, the brother of a fisherman who was detained last week. Witnesses saw Mr. de Oliveira and his brother,…
