Hong Kong activist Nathan Law said Singapore barred his entry over the weekend despite a valid visa. Law, who fled Hong Kong after Beijings controversial National Security Law, suspects political motives behind the decision.

An overseasHong Kongactivist said he was denied entry toSingaporeover the weekend for what he presumes were political reasons.

Nathan Lawsaid he was detained at the Singapore airport on Saturday night and told four hours later that his entry had been denied. He was going to attend a closed-door, invitation-only event, he said in a statement, without elaborating.

Law, who is based inLondon, is one of a number of activists who have fledHong Kongin recent years after the adoption of a National Security Law that has thrown others in prison.

He said he had received a visa from Singapore to attend the event and departed on a flight from San Francisco. No reason was given for the denial, he said, and he boarded a plane back to San Francisco on Sunday after about 14 hours in Singapore.

I think the decision to deny my entry was political, although I am unsure whether external forces, such as the PRC, are involved, directly or indirectly, his statement said, referring toChinaby the acronym for its official name, the People's Republic of China.

Watch moreNathan Law on the future for pro-democracy activists in Hong Kong

Law declined further comment. The Singapore Home Affairs Ministry did not immediately reply to a request for comment.

Hong Kong is a Chinese territory but has its own laws and regulations. The central government inBeijingcracked down after massive anti-government protests in 2019, imposing aNational Security Lawon Hong Kong the following year.

Read moreAnger as China passes controversial Hong Kong security law

Law rose to prominence as a student leader of the pro-democracy Umbrella Revolution in 2014 along with Joshua Wong, who is imprisoned in Hong Kong.

In 2023, Hong Kong police offered rewards of 1 million Hong Kong dollars ($127,600) for information leading to the arrest of Law and other self-exiled activists for National Security Law violations.

Law was elected to the legislature in 2016 but disqualified after he raised his tone while swearing allegiance to China during the oath of office, making it sound like a question.

(FRANCE 24 with AP)

Originally published on France24