Prime Minister Ranil Wickremesinghe was sworn in as Sri Lanka’s interim president Friday until Parliament elects a successor to Gotabaya Rajapaksa, who resigned after mass protests over the country’s economic collapse forced him from office.

The speaker of Sri Lanka’s Parliament said Rajapaksa resigned as president effective Thursday and lawmakers will convene Saturday to choose a new leader. Their choice would serve out the remainder of Rajapaksa’s term ending in 2024, said Speaker Mahinda Yapa Abeywardana. He expects the process to be done in seven days.

That person could potentially appoint a new prime minister, who would then have to be approved by Parliament. With Rajapaksa done, pressure on Wickremesinghe was rising.

Wickremesinghe in a televised statement said that in his short term, he will initiate steps to change the constitution to clip presidential powers and strengthen Parliament. He also said he will restore law and order and take legal action against “insurgents.”

Referring to clashes near Parliament on Wednesday night when many soldiers were reportedly injured, Wickremesinghe said true protesters will not get involved in such actions.

“There is a big difference between protesters and insurgents. We will take legal action against insurgents,” he said.