Dr Mahathir Mohamad, with his trademark sarcasm, took a swipe at Prime Minister Najib Abdul Razak and his wife Rosmah Mansor.

In a blog posting this evening, the former premier mentioned the “pink diamond” when complaining about how Royal Commissions of Inquiries (RCIs) are not established for the 1MDB scandal, the RM2.6 billion in Najib's personal accounts and others.

“The purchase of a pink diamond worth RM120 million is because of love for the wife. Is it wrong to love one's wife?” he asked...