Prime minister-designate Dr Mahathir Mohamad has assured that his administration will not exact revenge on their opponents.

However, should former prime minister Najib Abdul Razak be found to have broken the law, he would have to face the consequences, he said.

"The rule of law would be fully implemented by this government. There would not be any revenge."

"However, let's say if Najib does something wrong he will have to face the consequences," he told a press conference in Petaling Jaya today.

He said this when asked if his administration would seek revenge.

Najib has been dogged by the 1MDB affair for close to a decade. The company, set up shortly after he came to power in 2009, has been subject of investigations by multiple jurisdictions across the world.

Primarily, the US Department of Justice (DOJ) has alleged that billions were siphoned from the company and abused.

Among others, the DOJ alleged that a huge sum of money originating from 1MDB ended up in the accounts of a "Malaysian Official 1".

In 2015, Najib sacked deputy prime minister Muhyiddin Yassin and the attorney-general Abdul Ghani Patail when domestic investigations on 1MDB were taking shape.

Abdul Ghani's replacement Mohamed Apandi Ali had cleared Najib of any wrongdoing over the 1MDB affair in January 2016.