Work on the Iran-Afghanistan railway project is progressing at a steady pace with the network, linking the two neighbours, due for completion early next year, said a report, citing a senior official.

This comes as part of Iran's priority to link its railway system to the neighbouring countries, reported Iran Daily, citing a senior rialway official.

"Iran has extended its railways up to the Afghan border, however the remaining portion within Afghanistan is expected to be completed by 2018," Iran's deputy head for operation affairs Hossein Ashouri stated.

He said the infrastructure in Afghanistan is also ready and two railing blocks are being built in its territory, the report added.