By the Associated Press
Protesters have set fires on bridges leading to Hong Kong Polytechnic University as they try to keep police from advancing on their campus stronghold.
An armored police vehicle, left, approaches a burning barricade built by protestors near the entrance to the Cross Harbour Tunnel in Hong Kong, Sunday, Nov. 17, 2019. A Hong Kong police officer was hit in the leg by an arrow Sunday as authorities used tear gas and water cannons to try to drive back protesters occupying a university campus and surrounding streets. (AP Photo/Kin Cheung/MANILA BULLETIN)
Orange flames extend the length of a footbridge over the roadway entrance to the Cross-Harbour Tunnel.
Police had shut down access to the area and massed earlier Sunday in an apparent attempt to surround protesters. Some retreated inside the campus while others remained outside to deter any advance.
Another fire was set on a bridge over the toll booths for the tunnel. Protesters have blocked access to the tunnel for days and set fires in the toll booths.