Dialog Telecom, a leading service provider, said access to Facebook, Messenger, YouTube, WhatsApp, Viber, Twitter, IMO, Instagram, Telegram, Snapchat and TikTok have been restricted.
Namal Rajapaksa, the sports minister and President Rajapaksa's nephew, told reporters that the blockade was useless as many people would use VPNs to access social media sites.
The blockade came on a request from the defence ministry to the Telecommunications Regulatory Authority.
The government's blockade of social media platforms forced top government information communications technology official Oshada Senanayake to resign.
Also, READ: From supplying rice to diesel: Know how India is helping Sri Lanka during crippling economic crisis
“I am sorry I could not do more but circumstances are such and as I always said I would vehemently stand by my principles and ethos I believe in,” he tweeted.
The island nation is undergoing the worst economic crisis in history which has led to a severe shortage of food and fuel as the country it runs out of dollars to pay for imports. The public has been suffering for weeks with long lines for fuel, cooking gas, essentials in short supply and long hours of power cuts.
Rajapaksa has defended his government's actions, saying the foreign exchange crisis was not his making and the economic downturn was largely pandemic driven.