The deposition of 80 witnesses was a time-consuming process, A.P. Singh said.
"Till now, 10 witnesses have recorded their statements before the court. Seventy more witnessses have to depose and it will take time. Out of the 10 witnesses (who have recorded their statements), eight have been cross-examined and two are still left," counsel told IANS.
He said police have also booked the five accused under 13 counts under the Indian Penal Code, including murder, rape, attempt to murder and criminal conspiracy. The accused have pleaded not guilty and sought trial.
"All the five are not guilty of rape, murder and other offences, but police have painted all with the same brush," counsel said.
He also said he was "doubtful of a fair trial".