Warisan president Shafie Apdal has linked the corruption charge brought against its Labuan MP Rozman Isli today to the party's decision not to sign the memorandum of understanding (MOU) with the Ismail Sabri Yaakob-led federal government.

"Why is this happening? This happens because we didn't sign the MOU. If we had signed it, maybe this would not have happened," he told a livestream forum on corruption yesterday.

"I am quite sure this would not have happened if we had signed the MOU," he said.