Elephants have killed five people in a surprise attack on farmers who were harvesting their crop in a village in Macomia district in northern Cabo Delgado province.
The victims include two children and a woman.
Others who managed to escape the elephant attacks returned later to find the crushed bodies of their relatives.
The victims are formerly displaced people who had just returned to the village, according to local sources.
Cabo Delgado has been at the centre of a jihadist insurgency since 2017 that has forced hundreds of thousands people from their homes.
Macomia district neighbours the Quirimbas National Park, but no elephant attacks have been recorded for many years, including during the period of the jihadist attacks.
“This is a situation of conflict between humans and wildlife,” police spokesman Mário Adolfo told Lusa news agency, adding that the victims were not in a protected area.