Hong Kong police enter ransacked campus after protest siege

Hong Kong police on Thursday entered a ransacked university campus where authorities faced off for days with barricaded pro-democracy protesters, gathering a huge haul of petrol bombs and other dangerous materials left over from the occupation.

The Hong Kong Polytechnic University became the epicentre of the territory's increasingly violent protest movement when clashes broke out on November 17 between police and protesters armed with bows and arrows as well as Molotov cocktails.

The standoff settled into a tense stalemate during which hundreds fled the campus -- some making daring escapes, others caught and beaten by officers during failed breakouts -- leaving a dwindling core of holdouts surrounded by police cordons.

But in recent days, the last few people barricaded in the campus seemed to disappear.

University staff said they were only able to find a single protester on campus and reporters there struggled to see any major presence in the last 48 hours.

Late Wednesday, a lone masked man spoke to journalists inside the campus and said that some 20 protesters remained.

But there was no sign of them on Thursday morning when police and firefighters moved in, 11 days after the siege began, for what was billed as an operation to secure dangerous objects now littering the once placid campus and to collect evidence.

During the November 17 battle, the sheer volume of petrol bombs thrown by protesters succeeded in stopping police officers and crowd control vehicles from breaking through the barricades, forcing the stalemate that led to the siege.

Throughout Thursday, riot police in tactical gear began gathering hundreds of discarded petrol bombs and bottles of chemicals that had been looted from the university laboratories as well as archery bows and a makeshift catapult.

Explosives experts went from room to room followed by a gaggle of reporters, passing walls daubed with graffiti insulting the city's police force and calling for greater freedoms under Chinese rule.

Officers gathered a rapidly growing pile of items in a courtyard, from half-full jerry cans of petrol, to Molotovs made out of wine bottles and various chemicals in brown glass bottles.

Crime scene investigators could be seen dusting multiple objects for fingerprints, including cars parked in a basement that had been emptied of petrol from their tanks.

Police spokesman Chow Yat-ming said the priority for Thursday's operation was not the arrest of any holdouts who might still be hiding.

"The objective is not about people, it's about the dangerous items on campus," he told reporters. "But if we encounter any protesters or any person remaining inside then we'll try to convince them to seek medical treatment."