At least seven people were killed and 32 were injured, including nine seriously, after a boulder collapsed and fell on three boats in the Brazilian state of Minas Gerais on Saturday, local media reported.
Authorities said three people were still missing after others feared lost were located by telephone.
The rock was loosened at Furnas Lake in Capitólio due to heavy rains, according to Romeu Zema, the governor of Minas Gerais, a landlocked state in southeastern Brazil.
"I stand in solidarity with the families at this difficult time," Zema wrote on Twitter. "We will continue to act to provide the necessary protection and support."
Col. Edgard Estevo, commander of the Minas Gerais Fire Department, said during a press conference that the searches for the missing persons would continue, but the divers would stop their search during the night for their safety.
Brazilian President Jair Bolsonaro said that the Navy deployed a relief force team to join the search and rescue efforts.