The stand-off between police and protesters continues, at Hong Kong's besieged university campus.

About 600 anti-government activists have been arrested trying to leave the campus.

Others have been evacuated for emergency medical care.

Hong Kong reporter Jennifer Creery says  riot police are continuing to surround about one hundred remaining demonstrators.

"We're not really sure what's going to happen to those protesters yet, there is a possibility of police storming the campus."

Creery says once arrested protestors could face charges for rioting and spend years behind bars.