Former prime minister Najib Abdul Razak has joined the opposition bench in supporting calls for the Dewan Rakyat to debate the arbitration award which favoured the alleged descendants of the Sulu sultanate.

However, unlike the opposition MPs, Najib wanted the government to explain the 22-month Pakatan Harapan administration's handling of the matter.

The Pekan MP today wrote six questions on his Facebook regarding Harapan policies which he claimed would implicate the coalition that was trying to pin the arbitration award on the previous BN administrations or the current government.