Penang BN has questioned the "stark difference" of RM236 million in figures issued by the state government and Chinese firm China Railway Construction Corporation Ltd (CRCC) as the cost for feasibility studies and detailed design (FSDD) for the undersea tunnel project.

State BN chief Teng Chang Yeow pointed out the huge difference between the figure of US$22 million (approximately RM69.3 million) stated by CRCC and the sum of RM305 million as announced by the Penang government for the FSDD contract inked in 2013.

"Our findings show that the exchange rate on Oct 6, 2013, the day the FSDD contract was signed, was US$1 to RM3.15...