Police said they would study video footage from news channels to establish the sequence of events on the day of the incident.
The actor also said that he hoped that laws are changed to punish the culprits of the Delhi gangrape case.
The Aam Adami Party National Executive member says that deceased constable Subhash Tomar wasn't beaten up by protesters.
Kejriwal said that the police action so far suggests that it had "no evidence" against the eight people who had been booked for attempt to murder.
Tomar, who had received severe injuries in the rioting on Sunday, died in a hospital on Tuesday morning due to his injuries on his chest, neck and head.
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