Pakistan is set to sign a 40-year-lease with a Chinese company to develop a massive special economic zone in the deep sea port of Gwadar.

Pakistan is set to sign a 40-year-lease with a Chinese company to develop a massive special economic zone in the deep sea port of Gwadar, officials said Wednesday.

The scheme is part of the China-Pakistan Economic Corridor (CPEC), an ambitious $46 billion investment plan linking western China to the Arabian Sea with infrastructure, energy and transport projects.

The contract assigning the 923 hectare (2300 acre) swathe of tax-exempt land to China Overseas Port Holding Company (COPHC) is likely to be signed this month or October, Dostain Khan Jamaldini, chief of the Gwadar Port Authority (GPA) told AFP.

As part of the wider plans, "work on the Gwadar International Airport would start in the next couple of months and we are quite hopeful of completion of the national highway connecting Gwadar with the north within the next month", he added.

Pakistan is also raising a special security force of between 10,000 and 25,000 men to protect the port, which lies in the restive southwestern province of Baluchistan which since 2004 has been roiled by a separatist insurgency.

Abdul Razzaq Durrani, the director general of GPA, confirmed the deal.

Gwadar port, located 540 kilometers southwest of Karachi, was built in 2007 with  technical help from Beijing as well as Chinese financial assistance of some $248 million.

But acquiring the land from private owners to build the economic zone took several years and cost the Baluch government around $62 million, Durrani said.