https://techcrunch.com/2021/01/31/internet-connectivity-drops-in-myanmar-after-the-military-detains-aung-san-suu-kyi-and-other-leading-politicians/

Access to the internet in Myanmar dropped sharply after the military detained leaders of ruling party National League for Democracy, including Aung San Suu Kyi, and declared a state of emergency. The NLD won a wide majority of parliamentary seats in November’s general election, which the military alleges was the result of election fraud. In a statement on military-owned television, the army said a year-long state of emergency would be declared in Myanmar and power handed to military chief Min Aung Hlaing.

According to NetBlocks, a non-governmental organization that monitors digital rights, cybersecurity and internet governance around the world, internet disruptions began around 3AM Monday morning local time, with national connectivity falling to 75% of ordinary levels, and then reaching about 50% around 8AM. Data shows that the cuts affected several network operators, including the state-owned Myanma Posts and Telecommunications (MPT) and Telenor. NetBlocks said “preliminary findings [indicate] a centrally ordered mechanism of disruption targeting cellular and some fixed-line services, progressing over time as operators comply.”