Hong Kong university siege continues as city prepares for election

Medics warn of humanitarian crisis as protesters trapped inside campus for sixth day

Hong Kong's university siege stretched into a sixth day on Friday, as medics warned of a humanitarian crisis and the city prepared for weekend elections that will be a key barometer of public support for protesters.

The new police chief, who was sworn in on Tuesday after the Polytechnic University had already been sealed off, is apparently trying to avoid more violent confrontation.