A senior police official said adequate personnel have been deployed inside and outside the court to ensure no untoward incident takes place in the future.
Delhi Bar associations' members said litigants are not allowed in due to security reasons.
It was in January 1988 when Delhi Police arrested an advocate named Rajesh Agnihotri, after he was apprehended by the students of St Stephen's College for allegedly stealing from a ladies common room.
Police are probing both the cases and efforts are on to trace the missing 9mm pistol, they said.