In 2010, then Prime Minister Najib Razak announced proposals to introduce a new mass rapid transit (MRT) system to complement the current metro system. The proposal included three new lines in a "Wheel and Spoke" formation around the city. The Mass Rapid Transit Corporation Sdn Bhd (MRT Corp) was founded in 2011 and was appointed as the owner of the project and the MRT lines, unlike the LRT and monorail lines which are owned by Prasarana Malaysia. However, Rapid Rail was awarded the concession to operate the MRT lines, thus allowing the MRT lines to be full integrated with the Rapid KL system. The first line to be constructed, the MRT Kajang Line, which runs from Sungai Buloh to Kajang, entered full revenue service in 2017.