
The Associated Press has published its latest update, which describes how police are preventing protesters from leaving the campus:
Hundreds of protesters in Hong Kong are trapped inside a university campus, with police firing rounds of teargas at them to stop them breaking through a cordon to escape the area.
Protesters stuck in Hong Kong Polytechnic University advanced on the police from outside the cordon, while others emerged from the campus. However, they faced teargas and in some places police swooped in to make arrests.
It is unclear if any of those who have been stuck in the area have managed to make it out.
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