The state Civil Defense department said the latest slide unleashed by heavy rains hit in Rio's neighboring city of Niteroi. It's feared that dozens are buried under the debris.

Although rain let up some late Wednesday, Alves Souza, commander of the firefighters in the Niteroi rescue operations carried out under electric lights, said the work was moving slowly.

Record rainfall since Monday afternoon triggered deadly mudslides across Rio's metropolitan area, causing at least 147 deaths. At least 60 are missing, and dozens more are likely buried under the latest slide that hit Niteroi.