The UN’s World Food Programme says a food shipment headed to Burundi and meant to feed about 112 000 people has been stopped at the country’s border.
Spokesperson Challiss McDonough said the shipment was blocked while trying to get in from Rwanda.
Burundi police spokesperson Pierre Nkurikiye confirms the trucks have been stopped at the Gasenyi crossing but is not giving details.
The WFP says more than half of Burundians are chronically malnourished and two-thirds of family income is spent on food.
The East African country has seen almost two years of deadly political violence over President Pierre Nkurunziza’s stay in power.
Rwanda and Burundi have seen a rise in tensions, with Burundi’s government claiming that rebel forces have been trained and armed in Rwanda, but the country denies it.