A group of jostling people wearing AAP caps jumped barricades, set up around at all the arterial roads leading to the venue where Chief Minister Arvind Kejriwal sat on dharna for the second day, and clashes broke out when police started pushing them back.
There was heavy deployment of police at the high-security zone in central Delhi that houses Parliament, Prime Minister's Office, various ministries and Rashtrapati Bhavan.
In the morning the number of people at the protest site dwindled following heavy downpour but as the day progressed the crowd swelled.
All through the day, AAP supporters kept raising anti-police and anti-Shinde slogans.
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The police barricaded the area from four sides. At around 3.30 pm, some 200-300 AAP volunteers broke the barricades near the Constitution Club to reach to the place where Chief Minister was holding his protest.
In response, the cops baton-charged the AAP volunteers in which around 10 AAP workers were injured, while two policemen were injured in the incident of stone-pelting.
Police officers said they were operating under difficult conditions and trying to maintain law and order in the area.
"Police brutality is evident. Journalists were beaten up. A lot of our volunteers were beaten up.
"We are trying to maintain law and order and a lot of volunteers were injured and they are being taken to hospital," Singh, who is a member of the Political Affairs Committee (PAC), told reporters here.
He said the party was trying to ensure proper medical attention to all those injured.