The Home Ministry has asked Delhi Police to submit a report on Wednesday itself detailing the Patiala House court incident.
"I have spoken to the Delhi Police Commissioner and asked him to send a detailed report on the Patiala court incident today itself," Union Home Secretary Rajiv Mehrishi told reporters.
His comments came hours after a group of lawyers assaulted journalists and JNU student leader Kanhaiya Kumar when he was being produced at the Patiala House court.
"If anyone violates law, action will be taken," he said.
Asked about earlier attack on mediapersons on Monday, Mehrishi said investigation is going on into two FIRs registered in that connection.
"Action will be taken as per law," he said.
On Monday, journalists, students and teachers of JNU were attacked by people wearing lawyers' black robes in Patiala House court.
On Tuesday, hundreds of journalists hit the streets demanding action against those involved in beating up members of their fraternity in the court complex in police presence and sought Supreme Court's intervention for protecting freedom of speech.
Official sources said police would seek help from media organisations to provide video clips of February 9 incident at the Jawaharlal Nehru University to gather additional evidence against those who were involved in raising anti-national slogans and delivering inflammatory speech.
Asked about reports that Delhi Police would not oppose the bail plea of arrested JNU students union president Kanhaiya Kumar, they said perhaps police would like to incorporate everything in the charge sheet.