Hong Kong leader Carrie Lam has said she will withdraw the controversial extradition bill which triggered months of protests.
The proposal, introduced in April, would have allowed criminal suspects to be extradited to mainland China.
The bill was suspended in June when Ms Lam called it “dead”, but she stopped short of withdrawing it.
Full withdrawal is one of five key demands of protesters, who are also calling for full democratic rights.
In a televised address on Wednesday, Ms Lam also announced that two senior officials would join an existing inquiry into police conduct during the protests.
An independent investigation into alleged police brutality against protesters is another of the activists’ demands.
On Monday, Ms Lam was heard on leaked audio tapes blaming herself for igniting Hong Kong’s political crisis, and saying it was unforgiveable of her to have caused such huge havoc.
The extradition bill quickly drew criticism after being unveiled in April. Opponents said it would undermine Hong Kong’s legal freedoms and might be used to intimidate or silence critics of Beijing.
Hong Kong is now in its 14th successive week of demonstrations, and saw fresh violence between police and activists last weekend.
What did Carrie Lam say?
In the recorded message Ms Lam said the protests had “shocked and saddened the Hong Kong people” and the violence was “pushing Hong Kong towards a highly dangerous situation”.
“No matter what discontentment the people have towards the government or the society, violence is not the way to resolve problems,” she said.
“Currently, stopping the violence is the top priority, maintaining the law and rebuilding the rules of society. The government will sternly tackle violence and illegal action.”
Ms Lam said she and other senior officials would visit communities in Hong Kong and talk to people directly about their concerns.
Ahead of Ms Lam’s announcement, leading pro-democracy activist Joshua Wong said the withdrawal of the bill would be “too little too late”.
In a series of tweets he said all the protesters’ demands had to be met.
Demonstrators are also demanding an amnesty for those arrested, greater political reforms and for officials to stop describing the protests as riots.
Hong Kong was handed back to China in 1997 after more than 150 years of British rule. It has remained semi-autonomous under a “one country, two systems” principle but some fear China is seeking greater control.
Will concessions be enough to stop protests?
Analysis by Stephen McDonell, BBC News, Hong Kong
Three months ago, hundreds of thousands of people took to the streets of Hong Kong. However, their concerns regarding a bill allowing for extradition to mainland Chinese courts controlled by the Communist Party were dismissed by Carrie Lam.
Fast-forward to now and we are seeing weekly, increasingly violent street clashes between radicalised activists and riot police. Petrol bombs, rubber bullets and tear gas are regular features on the streets of this Asian financial hub.
By her own reckoning, Hong Kong’s chief executive has created “unforgivable havoc” by bungling the response to broad public opposition to her proposal.
Finally, she is officially withdrawing the bill.
There had been widespread speculation that Carrie Lam did not have the authority to adhere to this or any of the protesters’ demands because Beijing has really been calling the shots.
It is possible that she has been given the green light to pull the bill to try to show that Hong Kong’s autonomous decision-making is still intact.
But the longer it has taken for the extradition bill debate to be resolved, the wider the demands from activists have become. Many demonstrators now say they will not stop holding rallies without a genuinely independent inquiry into the Hong Kong police force and universal suffrage in this region.