28-year-old Prakash, a national general secretary of Aam Aadmi Sena, was produced before a duty metropolitan magistrate and was sent to judicial custody after the police said he was not required for custodial interrogation.
The shoe had not hit Kejriwal as it was quickly deflected by an official standing near the chief minister who, later, continued with the press conference.
Prakash, who was arrested yesterday, had first interrupted Kejriwal when he was briefing reporters at the media centre of the Delhi Secretariat about the rollout of the second phase of odd-even scheme and had thereafter thrown a shoe and a CD at the chief minister.
The attacker was thrashed by AAP volunteers before he was whisked away by the police after the incident around 4:10 PM.
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Police had said he is a resident of Begampur in North-West Delhi and is a property dealer.
Prakash had talked about the alleged irregularities in distribution of CNG stickers which are required for CNG-run cars to get exemption from the restrictions of the odd-even scheme.
He had alleged that the stickers were being sold for Rs 1,000 each at a CNG station near CGO complex in Lodhi Road and claimed to have done a sting operation about it on April 7.