This is the 917th most frequent Portuguese word.
encontrados
"Encontrados" means "found."
In this sentence, 'encontrados' is used in the past participle form to describe the objects (documents) having been found.
Os documentos foram encontrados na gaveta.
The documents were found in the drawer.
Here, 'encontrados' acts as an adjective qualifying 'itens', indicating that these items have been found.
Os itens encontrados pertencem ao museu.
The found items belong to the museum.
In this usage, 'encontrados' is part of a passive voice construction, indicating status or an incomplete action in the past.