In a statement issued in Kuala Lumpur on 8 February 2013, MRT said the agreement was for the design, construction and completion of the underground works, located between the Semantan North Portal and Maluri South Portal of the Sungai Buloh-Kajang Line.

The underground works include the construction of tunnels, stations and associated structures along this stretch, valued at MYR 8.28bn (USD 2.67bn).

Ten TBMs will be deployed to excavate the 9.5km underground section of the 51km MRT Sungai Buloh-Kajang Line.

The section will include seven underground stations: KL Sentral, Pasar Seni, Dataran Merdeka, Bukit Bintang, Pasar Rakyat, Cochrane and Maluri.

MRT CEO Datuk Azhar Abdul Hamid, said the 9.5km underground section was a very important part of the MRT Sungai Buloh-Kajang Line as it will serve the most busy and congested parts of Kuala Lumpur.

Phase One of the MRT Sungai Buloh-Kajang Line from Sungai Buloh to Semantan will be operational by the end of 2016, while phase two from Semantan to Kajang will be operational by July 2017, allowing trains to run the entire alignment from Sungai Buloh to Kajang.