Police on Friday raided the El Salvador offices of the Panama-based law firm Mossack Fonseca, which is at the heart of the Panama Papers leak.
El Salvador has announced a probe into whether the Salvadoreans identified in the Panama Papers reports had broken any laws. Reports said 33 Salvadoreans were named.
The country's state prosecutor, Mr Douglas Melendez, visited the law firm's premises on Friday.
He told reporters that about 20 computers and some documents were confiscated, and seven employees questioned but not detained.