The Mumbai police crime branch has managed to clearly identify the faces of nearly 40 to 50 protesters at Azad Maidan with the help of CCTV, video footage and photographs.
While the police have got the names and addresses of a few, they are still in the process of identifying more people, crime branch officials said.
Himanshu Roy, joint commissioner of police, crime, said they were making progress in the investigations and they had got details about a few of the people who participated in violence.
Sources in the crime branch said they were also trying to find the main accused.
"We have already found that the some of the suspects come from Kurla, Mumbra and adjoining others," said an official on condition of anonymity, as he is not authorised to speak to the media.
Police officers said they had zeroed in on people who had gone missing from their homes and where a few of them worked.
Some of the suspects who came by train armed with weapons and other material have also been recognised from the CCTV footage given by railway officials.
Apart from the crime branch's special investigation team, the detection branch of all police stations, personnel from Mumbai police's special branch, informers, and all crime branch units are examining the footage and photographs for suspects, officials said.