A naturalized American citizen and pastor’s son has been charged with “inciting secession” and “colluding with foreign powers” under Hong Kong’s new national security law.

Samuel Chu is a pro-democracy activist and managing director of the Hong Kong Democracy Council, based in Washington DC.

A warrant for the arrest of the activist, who is now in Los Angeles, has been issued by Hong Kong police, NBC News reports.

Writing in the New York Times, Chu warned that no one was beyond the law’s reach.

“It doesn’t matter that I’ve been an American citizen for 25 years — having left Hong Kong in 1990 to live in the United States,” he said.

“Nobody is beyond the law’s reach, not me in the United States, and certainly not the estimated 85,000 Americans living and working in Hong Kong itself,” he warned.