These journalists were present at the court on the day when JNUSU president Kanhaiya Kumar, arrested in connection with a case of sedition, was to be produced, when a group of men wearing lawyers' robes suddenly unleashed a brazen attack on journalists, students and teachers of JNU there.
The notices were served under Section 160 of the CrPC asking the journalists to join investigation along with evidence on specific dates, a source said.
Later, police taking suo moto cognisance of the incident had lodged two separate FIRs in connection with the incident, leading to arrest of BJP MLA O P Sharma in one case and three lawyers -- identified as Vikram Singh Chauhan, Yashpal Singh and Om Sharma -- in connection with the second case.