Standoff at Hong Kong Polytechnic University

Anti-government protesters trapped inside Hong Kong Polytechnic University abseil onto a highway and escape asmore

A protester tries to escape from a sewage tunnel inside the Hong Kong Polytechnic University campus, November more

A police officer detains a protester who tried to escape from the campus of the Hong Kong Polytechnic Universimore

Protesters leave the Hong Kong Polytechnic University campus to surrender to police, November 19. REUTERS/Thommore

A protester sits inside the Hong Kong Polytechnic University campus as she waits for a medical team to take hemore

A protester looks for police as he tries to leave the campus of the Hong Kong Polytechnic University, Novembermore

Protesters return to the Hong Kong Polytechnic University campus after being spotted by police, November 19. more

Riot police confront a Hong Kong Polytechnic University Campus Radio student reporter after detaining a protesmore

Protesters wait to receive medical attention after leaving the Hong Kong Polytechnic University campus, Novembmore

A protester tries to leave the Hong Kong Polytechnic University campus, November 19. REUTERS/Athit Perawongmetmore

A protester receives medical attention at the Hong Kong Polytechnic University campus, November 19. REUTERSmore

Protesters look for an exit at the campus of the Hong Kong Polytechnic University, November 19. REUTERS/Thomamore

Protesters leave the Hong Kong Polytechnic University (PolyU) campus to surrender to police, in Hong Kong, Chimore

A protester sits inside the Hong Kong Polytechnic University campus as she waits for a medical team to take hemore

Teachers and relatives wait for student protesters to surrender after they occupied the campus of the Hong Konmore

A riot police officer points a gun at protesters attempting to escape the campus of Hong Kong Polytechnic Univmore

Protesters attempt to leave the campus of Hong Kong Polytechnic University during clashes with police, Novembemore

Teachers and relatives negotiate with protesters about the surrender of students from the occupied campus of tmore

Protesters are escorted by police out of the campus of Hong Kong Polytechnic University during clashes with pomore

Two people sit amid the belongings and supplies left by anti-government demonstrators after surrendering insidmore

An anti-government demonstrator cries as she comes out to surrender during clashes with police near the Hong Kmore

Anti-government demonstrators take cover during clashes with police near the Hong Kong Polytechnic University,more

An anti-government demonstrator throws a stone as they block a road near the Hong Kong Polytechnic University,more

Hundreds of students make their way to the Polytechnic University, November 18. REUTERS/Athit Perawongmetha

Protesters climb over the fence back to the campus of Hong Kong Polytechnic University after failing to leave,more

A protester attempts to extinguish a fire at the campus of Hong Kong Polytechnic University, November 18. REUTmore

Police detain protesters who attempt to leave the campus of Hong Kong Polytechnic University, November 18. REUmore

Police detain protesters who attempt to leave the campus of Hong Kong Polytechnic University, November 18. REUmore

Police fire tear gas at Hong Kong Polytechnic University, November 18. REUTERS/Athit Perawongmetha

Protesters run from tear gas as they try to re-enter the campus of Hong Kong Polytechnic University, November more

Police detain protesters who attempt to leave the campus of Hong Kong Polytechnic University, November 18. REUmore

Medical staff carry a protester out of the campus of Hong Kong Polytechnic University, November 18. REUTERS/Thmore

Protesters attempt to escape from tear gas while trying to leave the campus of Hong Kong Polytechnic Universitmore

Protesters attempt to leave the campus of Hong Kong Polytechnic University, November 18. REUTERS/Adnan Abidi

Police detain a protester attempting to leave the campus of Hong Kong Polytechnic University, November 18. REUmore

A protester attempts to leave the campus of Hong Kong Polytechnic University, November 18. REUTERS/Tyrone Simore

Protesters run from tear gas as they try to re-enter the campus of Hong Kong Polytechnic University, November more

Police detain protesters who attempt to leave the campus of Hong Kong Polytechnic University (PolyU) during clmore

An anti-government protester uses a bow during clashes with police outside Hong Kong Polytechnic University, Nmore

Protesters clash with police outside Hong Kong Polytechnic University (PolyU) in Hong Kong, November 17, 2019.more

A protester throws a molotov cocktail during clashes with police outside Hong Kong Polytechnic University (Polmore

Protesters are sprayed with blue liquid from water cannon during clashes with police outside Hong Kong Polytecmore

A protester's umbrella catches on fire during clashes with police outside Hong Kong Polytechnic University (Pomore

A People's Liberation Army (PLA) soldier in riot gear stands guard inside a military base near Hong Kong Polytmore

Protesters clash with police outside Hong Kong Polytechnic University (PolyU) in Hong Kong, November 17, 2019.more

A China People's Liberation Army (PLA) soldier watches from behind the fences of the Gun Club Hill Barracks, amore

Smoke is seen inside the Centre for Independent Language Learning at Polytechnic University after police firedmore

A protester looks at fire at Hong Kong Polytechnic University (PolyU) during an anti-government protest in Honmore

An anti-government protester faces a fire during clashes with police, outside Hong Kong Polytechnic Universitymore

A riot police vehicle is set on fire during clashes outside Hong Kong Polytechnic University (PolyU) in Hong Kmore

Police armoured truck burns as it was hit with Molotov cocktails, after an attempt to ram the barricade at a bmore

Protesters on a rooftop use a slingshot to throw stones at riot police during clashes outside Hong Kong Polytemore

An anti-government protester received first aid after clashes with police outside Hong Kong Polytechnic Univermore

A fire is seen at Hong Kong Polytechnic University (PolyU) during an anti-government protest in Hong Kong, Novmore

A police vehicle catches fire after being hit with molotov cocktails, as anti-government protesters clash withmore

Anti-government protesters take cover during clashes with police, outside Hong Kong Polytechnic University (Pomore

Police fires a water cannon during clashes with anti-government protesters outside Hong Kong Polytechnic Univemore

Protesters climb a stairway filled with a makeshift barricade of chairs and other debris at the Hong Kong Polymore

An anti-government protester is silhouetted at the Hong Kong Polytechnic University (PolyU) during a fire in Hmore

An improvised catapult made by anti-government demonstrators is seen alongside potted plants and other objectsmore

An anti-government protester cleans up after protests at the Polytechnic University in Hong Kong, November 16,more

An anti-government protester poses for a photo at the Polytechnic University in Hong Kong, November 16, 2019. more

An anti-government protester receives medical attention near the Polytechnic University in Hong Kong, Novembermore

Anti-government protesters retreat back into the campus during the clashes with the police outside the Polytecmore

An anti-government protester stands at a blocked outlet of the Cross Harbour Tunnel near the Polytechnic Univemore