efe-epaBy Shirley Lau Hong Kong

A police PR officer in Hong Kong was hit in the leg by an arrow Sunday afternoon, as fierce street battles broke out between hardcore anti-government protesters and police outside a university campus in the city center.

In a new and sharp escalation of the ongoing political crisis that has been plaguing the Asian financial hub for over five months, black-clad protesters armed with numerous petrol bombs, bricks, umbrellas and makeshift shields battled for hours with riot police around Polytechnic University in the Hung Hom district in Kowloon.EFE-EPA