Abdul Rahman, who is also an Umno Supreme Council member and Sabah Barisan Nasional Secretary, said this was very dangerous at it could affect national security and stability.
"Of late, I am finding many subversive postings on the Facebook, mostly aimed at instigating people to push for Sabah's independence.
"We must remember Malaysia came into being through the agreement of the founding fathers and I deem it is not right or proper to revive this issue as it can cause us to be split," he told reporters after opening a Kaamatan (Harvest Festival) celebration in Tobilung, near here.
The Member of Parliament for Kota Belud added that the problem should be nipped in the bud before it got out of hand.
On housing, he said the Government had approved a RM180 million allocation for building 1,000 units of affordable homes in the constituency.