The decision by riot police to storm the subway station has drawn unfavorable comparisons among demonstrators with the events of last weekend, when protesters returning home to Yuen Long were viciously attacked by a mob wielding iron bars and bamboo sticks.
Several protesters were knocked to the ground and injured when police entered Yuen Long station just moments ago. Paramedics are now on the scene and attending to the wounded.
Blood stains can be seen across the station floor. Rather than forcing the protesters to leave many are now vowing to stay on. It is not clear whether police plan to reenter the station.
Protesters trapped by riot police in the Yuen Long subway station are chanting "Free Hong Kong."
Chaos briefly reigned inside the station when riot police charged up the stairs with batons, hitting protesters and using pepper spray.
Protesters responded by using fire extinguishers to try and push the police back.
Blood stains were clearly visible on the floor of the subway station after police left.
Police have warned protesters in Yuen Long that if they don't leave, they could be arrested and charged.
"The protestors are participating in an unauthorized assembly under the Public Order Ordinance and may be liable to a maximum penalty of five years' imprisonment," a statement from Hong Kong's police said.
Riot police charged into the Yuen Long subway station where demonstrators had been peacefully gathering, arresting at least one protester and spraying pepper spray into the crowds.
Hong Kong's riot police have entered the Yuen Long subway station, charging at protesters who were attempting to peacefully leave the demonstration.
At least one protester appears to have been arrested, while others are yelling at the police from behind the ticket gates amid scenes of panic and confusion.
Some of those gathered are now throwing things at the riot police, who are firing pepper spray into the crowds.
Police have begun to move towards the subway station from multiple directions in a bid to clear the remaining protesters from the streets of Yuen Long.
Inside the station, the smell of tear gas is thick in the air but many demonstrators are yelling defiantly and refusing to budge.
Protesters CNN spoke with said there was no plan and they were now waiting to see what happens next.
Others said they wanted to stay behind in case the alleged gang members, who last week attacked protesters in Yuen Long, came out again.
The small rural town of Yuen Long is in the far north of Hong Kong and for many protesters the subway is the only transport option available.
Nine people have been injured in clashes between demonstrators and police during Saturday's march in Yuen Long, Hong Kong's Hospital Authority said.
Five people are in a serious condition in Pok Oi Hospital, while another four are stable. Almost all of those injured were male.
The authority wouldn't give any further information on their injuries or whether they were police or protesters.
But the government said their ages range from 22 to 56.
Police declined to grant protesters a letter of no objection for Saturday's demonstration, classifying it as an unauthorized assembly, owing to safety concerns.
Lines of riot police are pushing towards the last remaining Yuen Long protesters, who have taken shelter behind barricades and umbrellas.
Multiple canisters of tear gas were fired as the lines advanced. There are more than a dozen police cars and vans parked behind the police lines.
Rubber bullet casings were also found on the ground after the police left, confirming they'd been used earlier in the day against protesters.
As police moved in, Yuen Long subway station was filled with protesters clearly unsure about whether to stay or leave.
Yuen Long has become an unlikely focal point of the city's pro-democracy movement after protesters returning to the town were viciously attacked by a mob wielding iron bars and bamboo sticks last weekend.
Six men have been arrested in connection with the attack. The men, whose ages range from 24 to 54, will face charges of "unlawful assembly" police said in a press conference earlier this week. Their motives are still under investigation but police said some of those arrested had links to local criminal gangs known as triads.
Footage posted on social media Sunday night showed a marauding gang of masked men, wearing white T-shirts and wielding batons and sticks, blindly attacking crowds on the platform and inside train carriages at Yuen Long metro station.
Protesters were reportedly at the mercy of the mob for almost an hour before police arrived and at least 45 people were injured.
One week later, three people remain in hospital, one of whom is in a critical condition.