Thousands demonstrated Sunday, following overnight raids in Yangon.
Soe Win with the National League for Democracy (NLD) confirmed that some party officials were arrested in Saturday night raids, but the exact number is unknown.
State-run media on Sunday warned ousted lawmakers involved in a group called the Committee Representing Pyidaungsu Hluttaw -- which is claiming to be the legitimate elected government -- that they are committing "high treason" and could be sentenced to death or 22 years in jail.
The State Administration Council (SAC) has declared group members personae non-grata and says those who communicate with them could face seven years prison.
Sunday saw rallies across Myanmar against the SAC, with more than seven separate demonstrations in Yangon and at least five in other cities and regional towns, according to Facebook live feeds.
In Bagan, a UNESCO World Heritage Site famed for its ancient Buddhist temples, security forces shot a 19-year-old man in the jaw and a woman, 56, was hit by a rubber bullet, rescue team member Ko Ko told AFP.
Yangon-based activist Maung Saungkha said coordinated protests across the country were part of a two-day general strike.
A state-run newspaper Sunday urged people not to join the rallies.
"The public should be careful not to get involved in the protests to prevent the future of their children being ruined," the Global New Light of Myanmar said.
The SAC has warned civil servants that "they will be fired" with immediate effect if they continued to strike.
The warning came as Myanmar's trade union movement called on workers to shutdown the economy on Monday.
"To continue economic and business activities as usual... will only benefit the military," 18 unions said in a statement.
In Yangon's North Okkalapa township, protesting took on a musical flavour with an impromptu concert.
Late on Sunday night security forces were deployed to multiple neighbourhoods in Yangon and gunshots could be heard, according to social media videos.
Earlier authorities used tear gas and fired projectiles at demonstrators in Mandalay, Myanmar's second biggest city.
© AFP
