HONG KONG, Sept 25 — A student arrested in Hong Kong on suspicion of selling weapons online faces charges of inciting secession under a security law imposed on the city by China three months ago, a senior police officer said today.

Police arrested the 23-year-old man and his mother, 49, yesterday on suspicion of selling pepperball guns, knives, and other offensive weapons, and on further investigation found online posts promoting the use of violence to win independence from China, Steve Li, senior superintendent in the police’s new national security unit, said.

Li did not give the names of the suspects.

Beijing imposed a sweeping national security law on June 30 to punish with up to life in prison, anything China deems as secessionism, subversion, terrorism and collusion with foreign forces.

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Critics of the law say it will erode rights and freedoms in semi-autonomous Hong Kong, while supporters say it will bring stability after a year of social unrest. — Reuters