Insiders in Railways maintained that appointment of officers from signal and telecom as member electrical have always been met with opposition. Mahesh Kumar comes from this discipline.
They said intense lobbying for this post had begun for quite sometime as the present Member Electrical Kulbhusan is tipped to take over as Chairman Railway Board in July.
Kumar, the main accused in the bribery case in which Singla has also been arrested, was "not interested" in becoming Member Staff of Railway Board, CBI has said.
Member Electrical in the Board, the highest decision making body of the national transporter, is at present looking into the implementation of projects worth thousands of crores.
Besides, the department is believed to be finalising a proposal for introduction of train sets in high density routes, with each coach coming at Rs 150 crore. The high speed train sets are expected to cruise along at 150 to 160 kmph, cutting travel time between metros.
The ambitious high-speed rail connectivity project is also being pursued by it, with estimates suggesting that laying one km of track would roughly cost Rs 200 crore.