Militants have ambushed a convoy that was trying to rescue civilians from a hotel amid fighting in northern Mozambique, APA reports citing BBC.
A South African man has been confirmed as dead, but many details are unclear.
Hundreds of people fled the fighting, which began on Wednesday in the town of Palma. Evacuees included foreign gas workers.
Palma is close to a huge natural gas project run by international oil firms including the French giant Total.
Northern Mozambique has been torn apart by an insurgency since 2017.
Militants linked to the Islamic State (IS) group are behind the conflict in the predominantly Muslim region of Cabo Delgado. The fighting has left more than 2,500 people dead and 700,000 displaced.