Hong Kong protests: China condemns 'horrendous incidents'
A spokeswoman for China's top policy office on Hong Kong insisted that the territory's "top priority" was to "restore social order".
The comments marked a rare intervention by the Hong Kong and Macau Affairs Office [HKMAO].
The city has seen eight consecutive weekends of anti-government protests.
There were violent clashes on Sunday as police fired tear gas and rubber bullets at protesters. Barricades were also erected at several different locations in the city.
Although authorities in Beijing have condemned the protests and reiterated their support for Hong Kong's leader Carrie Lam on several occasions, Monday's intervention is widely seen as conveying the official views of China's top leadership on the civil unrest for the first time.
What did China say?
A spokesman for the HKMAO, Yang Guang, condemned what he called the "evil and criminal acts committed by the radical elements" in Hong Kong.
"We call on the general public of Hong Kong to be aware of the grave nature of the current situation," he said at the news conference.
Spokeswoman Xu Luying added: "We also believe that Hong Kong's top priority... is to punish violent and unlawful acts in accordance with the law, to restore social order as soon as possible, and to maintain a good business environment."
The office also:
Reiterated that the Chinese government "strongly" supports the leadership in Hong Kong
Called on the people of Hong Kong to "unequivocally oppose and resist violence"
Expressed support for the city's police force
Blamed the escalating tensions on "irresponsible figures in Western countries" who are hoping to "contain China's development"
The intervention came a week after protesters defaced the highly symbolic national emblem on the Chinese government's liaison office in Hong Kong, prompting fury in Beijing.
The authorities have now installed a protective casing around the sign.
As a former British colony, Hong Kong has its own legal and judicial systems, and has been promised "a high degree of autonomy" from the Chinese government except in foreign and defence affairs.
Claudia Mo, a Hong Kong legislator who supports the protest movement, said Beijing's latest comments could provoke further unrest.
"I'm so worried what happened in Beijing today [will] actually help fan the fire," she told the BBC. "The way they say they resolutely... support Carrie Lam and the police force. They are trying to divide Hong Kong."
Bruce Lui, a senior journalism lecturer at the Hong Kong Baptist University, said he could not recall a news conference on Hong Kong being called by the HKMAO.
"Beijing is repeating what it has said before. It condemns violence, supports Carrie Lam and Hong Kong police," he told the BBC. "But when asked about the deployment of China's People's Liberation Army (PLA) troops, the spokesperson showed a rather distant attitude."
Although PLA troops are stationed in Hong Kong, they are not expected to interfere in local issues. But the law does permit Hong Kong's government to request assistance from the PLA for the purposes of maintaining public order or disaster relief.
China's two-pronged strategy
Beijing seems to be trying to get a grip of the turmoil in Hong Kong with a two-pronged strategy.
It is sharing its views on why the territory's residents are protesting, blaming a small number of "radicals" who are influenced by overseas forces. But it is also trying to maintain some distance by reaffirming its support for the authorities there.
The spokespeople continually praised the actions of the "courageous" police. The one question that was quickly batted away in the news conference was a query about the possible intervention by Chinese forces.
At times they sounded conciliatory. They also expressed support for Hong Kong's unhappy youth, noting that more needed to be done to provide affordable housing and employment.
But much more time was focused on Beijing's reasoning for what has gone so wrong. The officials repeatedly blamed "irresponsible figures" in the West. They also said that many in Hong Kong support the territory's chief executive, Carrie Lam, although they said those individuals are "relatively quiet".
It seemed that Beijing was not even bothering to win over sceptics in Hong Kong. Instead, this press conference repeated views already found in China's state media. This kind of media outreach was new - but the viewpoints don't appear to have changed.
Analysis by Celia Hatton, BBC News, Beijing