Senior officials said, Ashutosh may be arrested, while a notice has been sent to Shazia Ilmi to "join the investigation".
Ashutosh and Shazia Ilmi have defended their stand saying that stones were thrown at them, and they were trying to prevent the clashes.
A large number of AAP supporters gathered in Model Town and shouted slogans in support of their leaders.
Earlier, Delhi Police late Wednesday night released all Aam Aadmi Party female workers detained in connection with protest and clashes outside BJP party headquarters.
However, 17 AAP workers have been arrested.
Late at night, Delhi police registered an FIR against AAP Leaders Ashutosh, Shazia Ilmi, Prof Anand, and some AAP workers in Parliament Street Police station under these sections:- 145(unlawful assembly), 147(Rioting), 149(unlawful activities), 332(Obstructing the public servant in imparting his duty), 353( Assault on public servant), 427(Damage of property and Prevention of damage to public Property Act.
