The Hong Kong Polytechnic University (PolyU) reopened on Friday after the security team cleared the campus of dangerous items and weapons left behind by rioters, a police official confirmed.

The nearby roads have also reopened, and university officials said comprehensive environmental and safety assessments will be conducted immediately after the campus is handed back to the management.

Police said around a hundred police officers were dispatched Friday morning to the varsity, and no arrests were made. The dangerous articles collected at the campus were immediately transferred to the police.

Moreover, police removed over 3,800 petrol bombs and 500 hazardous chemicals from the campus on Thursday.

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"The destruction of the campus is very serious; we are deeply saddened by that. Schools have been closed for a while, which has greatly affected our teaching. Many buildings, including the library, have been seriously damaged," a PolyU official said on Friday at a press conference.

Around 1,100 demonstrators left the campus peacefully, no one was hurt, and the incident was resolved peacefully, the official added.

The PolyU official again reiterated plans to restore the school as soon as possible.

Meanwhile, protesters in Hong Kong are still trying whip up support for more rallies over the weekend. 

Radical protests have been wreaking havoc in the city since June, at times forcing businesses, government institutions, schools and even the international airport to shut down. 

Beijing has repeatedly condemned foreign interference in its internal affairs, as U.S. officials were seen meeting with several radical opposition figures, including the "Hong Kong independence" activist Joshua Wong. 

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Protesters plan to gather at the British consulate on Friday, at 7 p.m. local time, over the case on consulate's former employee.

The rally comes after the British consulate's former employee and Hong Kong resident Simon Cheng claimed that Shenzhen police beat him and deprived him of sleep during his 15-day administrative detention in August. But video footage released by the south China city's police later showed him soliciting prostitutes in a hotel.

Other protests planned for the weekend include a "march of gratitude" to the U.S. consulate.

U.S. President Donald Trump signed the Hong Kong Human Rights and Democracy Act into law on Wednesday.

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