Tens of thousands of protesters plan to stage an anti-government rally in the Malysian capital, Kuala Lumpur during the weekend to demand the resignation of the country’s Prime Minister Najib Razak over a financial scandal.

The rally will begin Saturday and is expected to gather tens of thousands of pro-democracy activists in Kuala Lumpur.

Najib is under criticism over a financial scandal involving 1Malaysia Development Berhad (1MDB), a state fund set up by him.

“We are taking to the street because there is something rotten in the state of Malaysia. Poor governance and a lack of accountability have resulted in grand corruption in 1MDB,” said Maria Chin, the chairwoman of pro-democracy group of Bersih.

“People have a right to peaceful assembly… We are protesting because keeping silent on corruption and abuse of power is not an option,” she added.

Najib has rejected calls to resign.

“You cannot indulge in any kind of physical clash at all… and that’s not the culture that we will want to be accepted as our way of life in Malaysia,” he said.

He went on to say that the public should wait for the next election in 2018.

The Malaysian prime minister came into power in 2009 after he promised a government “free of corruption.”