Sri Lanka's government has blocked access to social media and imposed a 36-hour curfew, following protests against food and fuel shortages.
President Gotabaya Rajapaksa issued a notice prohibiting anyone from being on any public road, in a park, on trains, or on the seashore, unless they have written permission from the authorities. The curfew began at dusk on Saturday.
The social media sites blocked include Facebook, Twitter, and Instagram. WhatsApp is also down, and mobile phone users received a message saying this was "as directed by the Telecommunications Regulatory Commission".
The stringent restrictions are aimed at preventing new protests after crowds were accused of setting vehicles ablaze near the president's private residence on Thursday. The military has since been deployed and now has the power to arrest suspects without warrants.
The island nation is in the midst of a major economic crisis. It is caused in part by a lack of foreign currency, which is used to pay for fuel imports. Faced with power cuts lasting half a day or more, and a lack of fuel and essential food and medicines, public anger has reached a new high.
Thursday's protest outside President Rajapaksa's Colombo house began peacefully, but participants said things turned violent after police fired tear gas, and water cannons and also beat people present.
Protesters retaliated against the police by pelting them with stones. At least two dozen police personnel were reportedly injured during the clashes, according to an official cited by the Reuters news agency.
On Friday, 53 demonstrators were arrested, and local media reported that five news photographers were detained and tortured at a police station. The government said it would investigate the latter claim. Despite the crackdown, protests continued and spread to other parts of the country.
Demonstrators in the capital carried placards calling for the president's resignation. The demonstrations mark a massive turnaround in popularity for Mr. Rajapaksa, who swept into power with a majority win in 2019, promising stability and a "strong hand" to rule the country.
Analysis: Rajini Vaidyanathan, South Asia Correspondent in Colombo. This morning Sri Lankans woke up to the news that social media accounts had been blocked by the government, amid growing fears their basic freedoms are being taken away from them.
Police and the military are out on the streets of the capital Colombo.
Sunday was planned as a day of mass protest against the worsening fuel and food shortages, but with a curfew in place and a state of emergency declared many say they'll stay at home.
Others refuse to be silenced - from 10 pm Saturday to 6 am Sunday authorities say they arrested 664 people for violating the curfew in the Western province, which includes the capital, Colombo.
The government says these measures are to maintain order after demonstrations turned violent outside the President's house on Thursday. Many people we've spoken to - from all walks of life - blame the authorities for mismanaging this crisis. Frustration is rising in this island nation.
"Enough is enough," Roshinta, a student, told me as she held a placard in the city center before the curfew kicked in. "Millions of people are suffering, and we are angry".
Source: BBC