"We have completed an internal study, tracing the history of such areas as Oepoli, Amfoang and Kupang. This border issue can actually be solved by adopting a social and cultural approach," Manehat said here.
He added that there were a number of documents that show that Oecussi, an enclave, was exchanged with Neomuti area located in North Timor Tengah district.
"Oecussi was once a Dutch colony, and was then included in the Portuguese ruled area, while Noemuti was a Dutch colony and was then part of the Portuguese colony," he said.
According to Manehat, there was a land swap between the Portuguese and the Dutch governments. "This land swap occurred in 1859," he added.
"There exist some important documents about these areas, and we will encourage a resolution to the border issue between Indonesia and Timor Leste through the socio-cultural approach," he said.