Mahathir is seen wearing a yellow Bersih T-shirt for the first time in a video posted online.
If the charges are pressed and proved in the court, Ahok could be jailed for up to five years.
The next general election in Malaysia will be held in June 2018.
Thousands of Muslims complained against the Christian governor demanding his resignation and arrest.
A woman called Michelle an "ape in heels" in her facebook post.
As much as 38 percent of posts by rightwing groups contained false or misleading information.
The leaders agree to work towards 'constructive cooperation'.
Singapore, Switzerland and the US are also probing people and organisations involved in the 1MDB scandal.
Rafizi Ramli had left the Najib Razak government red-faced by revealing documents related to the 1MDB probe.
The crown prince's return from Germany quells a fresh round of rumours.
Japan says four ships entered at around 10.30 am and left within two hours.
For India this is a diplomatic win over China after Beijing blocked its entry into the Nuclear Suppliers Group (NSG).
One popular headline read; 'Breaking: Obama now considering martial law because of mass riots'
Former US President Barack Obama is succeeded by Donald Trump, who won the election battle with 276 electoral votes.
Meng Hongwei is currently China's Vice Public Security Minister.