Police said they found about 2 kilograms (4.4 pounds) of TATP and arrested a man in a raid on a commercial building late Friday night. TATP, or tri-acetone tri-peroxide, has been used in terrorist attacks worldwide.
Clashes broke out as protesters hurled umbrellas and plastic bottles at police who retaliated by firing pepper spray amid chaotic scenes inside a shopping mall that houses some of the world's biggest luxury brands.
The demonstration in the Hong Kong territorial town of Sheung Shui began peacefully but devolved into skirmishes and shouting. Protesters threw umbrellas and hardhats at police, who retaliated by swinging batons and firing pepper spray.
But Lam's attempt to restore order in the Asian financial hub and cling to her job did not satisfy many protesters who demanded she completely withdraw the bill and charged her with playing word games by declaring the bill dead.
The protesters were angry. For three weeks, they had tried to get the government's attention by blocking streets, defacing police headquarters and occupying government offices. Along with more peaceful demonstrators, they opposed the government's attempt to change extradition laws to allow suspects to be sent to China.
Protesters formed a sea of black along roads, walkways and train stations across Hong Kong’s financial centre to vent their frustration and anger at the bill and the government’s handling of the resulting demonstrations.
The extradition law has aroused concerns that this would undermine the city's independent judicial system as it allows Hong Kong to hand over fugitives to the jurisdictions that the city doesn't currently have an extradition agreement with, mainland China.
In the Top frames this week The Nobel Peace Prize 2014 was awarded jointly to Kailash Satyarthi and Malala Yousafzai "for their struggle against the suppression of children and young people and for the right of all children to education".