Local media reported that they were accused of leaking travel details of a Hong Kong police football team.
Flights were departing Hong Kong airport largely on schedule on Wednesday morning, a day after protesters caused chaos with a disruptive sit-in that paralysed the busy transport hub.
Another commentary by a Shenzhen University researcher, published by the China Daily, said the central government should deal with Hong Kong issues more decisively.
"I hope it works peacefully. I hope it works out for everybody, including China", Trump said.
There is also the question of the resistance Chinese troops could face among a Hong Kong populace that has continued to take to the streets despite an often bloody security crackdown.
Most of the protesters left the airport Tuesday after officers armed with pepper spray and swinging batons tried to enter the terminal, fighting with demonstrators who barricaded entrances with luggage carts.More news: Trump wants United States to buy Greenland
Additional identification checks were in place, but check-in counters were open and flights appeared to be operating normally.
The U.S. denied on many occasions its involvement in the ongoing violent incidents in Hong Kong.
A few protesters on the ground reportedly attempted to advocate for the paramedics, while the majority of the crowd refused to let them pass. Onlookers described the scene as much more chaotic than in days past.
"We will continue to fight for what we deserve otherwise all of that would have been in vain", he said, declining to give his full name.
The former British colony has a special status, with its own legal system and judiciary, and rights and freedoms not seen in mainland China.
Beijing has condemned the movement and said it had reached "near terrorism" following further clashes at the city's airport.
In Hong Kong's blue-collar Sham Shui Po neighborhood, police fired tear gas Wednesday night at a group of protesters rallying outside a police station.More news: Your MacBook Pro might've just been banned from flights by the FAA
The burst of violence included protesters beating up at least two men they suspected of being undercover Chinese agents.
Meanwhile, Chinese media are actively promoting the video of the reporter's ordeal in mainland China, where news of the Hong Kong demonstrations has been carefully managed, says the BBC's Asia-Pacific editor Michael Bristow.
Demonstrators and riot police clashed at Hong Kong's airport late on Tuesday after flights were cancelled for a second day. It suspended a second pilot on Tuesday.
Earlier on Wednesday, Cathay Pacific had issued a statement to support the government. It said an area of the airport had been set aside for demonstrations, but no protests would be allowed outside the designated area.
Beijing has mostly watched from the sidelines as the protests in Hong Kong, triggered by a controversial extradition treaty with China amid a perceived general erosion of freedoms since the territory was handed back to China in 1997, have grown increasingly violent.
The agreement stated that Hong Kong would "enjoy a high degree of autonomy, except in foreign and defence affairs" and be "vested with executive, legislative and independent judicial power".More news: Gas line explosion destroys homes in London, Ontario
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