Prime Minister Najib Abdul Razak’s moral compass will determine if he continues to remain at helm or relinquishes his post, former MCA president Ong Tee Keat says.

"Earlier on, I suggested that Najib should take leave amidst this (RM2.6 billion) controversy. I think (resigning) is an option... most importantly, it depends on what Najib's values are," Ong said.