Equatorial Guinea has demanded that Brazil hand back more than $16m (£12m) worth of cash and luxury watches confiscated from a delegation accompanying the president’s son, Teodorin Nguema Obiang.
Equatorial Guinea’s foreign minister described the seizure as a “paltry and unfriendly” act.
Mr Obiang, who is vice-president of Equatorial Guinea, arrived in Brazil on Friday on board a private jet.
Brazil prohibits people from entering the country with more than $2,400 in cash.
Both Mr Obiang and his father deny misusing their country’s oil revenue. (BBC)