All 26 cabinet ministers of Sri Lanka have stepped down amid growing public outrage over the country’s economic crisis and shortages of food, fuel and medicines.

They submitted letters of resignation – but not Prime Minister (PM) Mahinda Rajapaksa.

The crisis is caused in part by a lack of foreign currency, which is used to pay for fuel imports.

With power cuts lasting half a day or more, and shortages of food, medicines and fuel, public anger has reached a new high.

It is a massive turnaround in popularity for Rajapaksa, who swept into power with a majority win in 2019, promising stability and a "strong hand" to rule the country.

Education Minister Dinesh Gunawardena told reporters Sunday that the cabinet's ministers had tendered their resignation letters to the prime minister.

The prime minister's son, Namal Rajapaksa, was among the cabinet ministers to resign, tweeting that he hoped it would help the president and PM's "decision to establish stability for the people and the government".

President Gotabaya Rajapaksa – who is PM Rajapaksa's younger brother – imposed a 36-hour curfew Friday, a day after clashes near his residence.

People are banned from being on any public road, in a park, on trains or on the seashore unless they have written permission from the authorities, and access to social media was blocked temporarily.

The curfew is due to remain in force until 06:00 (00:30 GMT) Monday, reports BBC.

Sunday, soldiers armed with assault rifles blocked an attempt by a crowd of hundreds of protesters to march to Independence Square in the capital.

"President Rajapaksa better realise that the tide has already turned on his autocratic rule," opposition MP Harsha de Silva told the AFP news agency at a rally. Another opposition MP, Eran Wickramaratne, said: "We can't allow a military takeover. They should know we are still a democracy."

In Kandy, a city of 125,000 people in Central Province, police fired tear gas at hundreds of protesting students near the University of Peradeniya.

Thursday's protest outside President Rajapaksa's house in Colombo began peacefully, but participants say things turned violent after police fired tear gas and water cannon, beating demonstrators.

Protesters retaliated by pelting police with stones and at least two dozen police personnel were reportedly injured, with several vehicles also set on fire.