After nightfall, the police locked down the Polytechnic University and forbade everyone to leave. At around 9pm Hong Kong Police Force announced on their Facebook page that people on campus can leave via Block Y . However, the police seemingly broke their promise and arrested those who tried to leave. Legislative Council member Ted Hui Chi-Fung said on Facebook that he was trying to escort people away from the campus, but the police attacked them with tear gas and sound cannon. He denounced the police for breaking their promise and making arbitrary arrests. A footage shot by local media SocRec shows that riot police threw multiple stun grenades at protesters inside the university at about 10pm. Strong light and large amount of smoke were seen following thundering explosions, which, apparently, also affected the camera used to film that footage and caused a black screen.
Sources said a number of volunteer first-aiders exiting from Block Y were taken away by the police. The protesters barricaded the exit of Block Y afterwards, and the make-shift barricade immediately caught a fierce fire. Police broadcast on-site accused people of pretending to be reporters on multiple occasions to leave the scene and avoid criminal responsibility. Police also claimed to have blocked all roads near the Polytechnic University and that everyone, including reporters, are not allowed to leave unless they go back to the Polytechnic University for police searches, or have their identities confirmed. The police continued to say that “reporters are not privileged, your journalist work here, your so-called “fourth power”, is only allowed when permitted by the police. It is best for you to remain behind police lines. ” Citing a source in PPRB, the Hong Kong Journalist Association said unless a valid reporter’s certificate can be presented, all those who leave the Polytechnic University will be arrested by the police.