Former prime minister Najib Abdul Razak swiped back at PKR president Anwar Ibrahim and his deputy Rafizi Ramli over their remarks at the party congress today.

He chided Anwar's "populist" pledges while mocking Rafizi's plans to put him in jail.

Anwar, had, in his speech earlier today, repeated his past promise to reduce petrol prices the very next day if he ever becomes a prime minister.

He said the previous Pakatan Harapan government could not fulfil this, as he was not the premier.