CBI's submission came when a prosecution witness whose deposition was to be recorded did not appear in the court and her daughter informed the court that she was unwell.
CBI prosecutor D P Singh submitted before District Judge Amarnath that in future the court should take strict action against the witnesses if they fail to appear before it as their absence delays the trial.
The court posted the case for June 6 and directed Kaur to appear on that day along with her medical certificate. The day's proceedings were videographed.
During the hearing, advocate Anil Sharma, appearing for the accused argued that the trial was getting delayed due to the non-presence of witness.
The case was transferred from Karkardooma court to Patiala House court here by the Delhi High Court which had directed the district judge to video record the proceedings at the cost of the accused.
These three accused are facing trial on charges of murder and rioting in the case pertaining to killing of Surjit Singh in Sultanpuri here.
The proceedings in the case were earlier stayed after the victim and complainant Joginder Singh had approached the high court seeking transfer of the case to another court alleging that the evidence was not being properly recorded.
While transferring the case, the high court had made it clear that the transfer was "warranted to protect and uphold the dignity of the judicial system and to promote the faith of citizens in courts of law".
The court had also framed charges for offence of spreading enmity between two communities against the accused.
Deposing as a prosecution witness, Kaur had on September 10 last year told the trial court that she had seen Kumar allegedly addressing the crowd and instigating the mob to kill them.