Security forces in Myanmar on Saturday again met protests against last month’s military takeover with lethal force, killing at least seven people by shooting live ammunition at demonstrators. Four deaths were reported in Mandalay, the country’s second-biggest city, two in Pyay, a town in south-central Myanmar, and one in Twante, a suburb of Yangon, Myanmar's largest city. Details of all seven deaths were posted on multiple social media accounts, some accompanied by photos of the victims. The actual death toll is likely to be higher, as police apparently seized some bodies, and some of the victims suffered grievous gunshot wounds that doctors and nurses working at makeshift clinics will be hard-pressed to treat. Many hospitals are occupied by security forces, and as a result are boycotted by medical personnel and shunned by protesters. The independent U.N. human rights expert for Myanmar, Tom Andrews, said Thursday that “credible reports” indicated security forces in the Southeast Asian nation had so far killed at least 70 people, and cited growing evidence of crimes against humanity since the military ousted the elected government of Aung San Suu Kyi. Other unofficial but carefully compiled tallies put the total number of deaths since the coup at around 90. Saturday’s killings did not faze demonstrators in Yangon who crowded a downtown commercial area past the official 8 p.m. curfew to hold a mass candlelight vigil and to sing about their cause. The mostly young protesters rallied at an intersection where they usually gather for daytime protests. After-dark rallies was also held in Mandalay and elsewhere. Reports on social media also said three people were shot dead Friday night in Yangon, where residents for the past week have been defying the curfew to come out onto the streets. Two deaths by gunfire were reported in Yangon’s Thaketa township, where a protest being held outside a police station was dispersed. A crowd had gathered there to demand the release of three young men who were seized from their home earlier Friday night. Photos said to be of the bodies of two dead protesters were posted online. The other reported fatality Friday night was of a 19-year-old man shot in Hlaing township. The nighttime protests may reflect a more aggressive approach to self-defense that has been advocated by some protesters. Police had been aggressively patrolling residential neighborhoods at night, firing into the air and setting off stun grenades in an effort at intimidation. They have also been carrying out targeted raids, taking people from their homes with minimal resistance. In at least two known cases, the detainees died in custody within hours of being taken away. Another possible indication of heightened resistance emerged Saturday with photos posted online of a railway bridge said to have been damaged by an explosive charge. The bridge was described in multiple accounts as being on the rail line from Mandalay to Myitkyina, the capital of the northern state of Kachin. The photos show damage to part of a concrete support. No one took responsibility for the action, but it could serve a two-fold purpose. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Have a story to tell? Fill out this survey for a chance to have it featured on Bloomberg Quicktake: https://cor.us/surveys/27AF30 Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake