"Accused Siraj Rehman has been made a scapegoat as he was also arrested in the photojournalist rape case (which took place on the same premises some days later)," his lawyer R G Gadgil said.
The court is hearing the final arguments.
Earlier, special public prosecutor Ujjwal Nikam argued before the Principal Judge Shalini Phansalkar-Joshi that all the evidence had been corroborated, and the accused should be convicted.
Mobile phone and a SIM card were planted on the accused just to implicate him, Gadgil said.
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During the cross-examination of one of the police officers, who arrested the accused, he had told the court that there could be many people with such names, Gadgil noted.
Further, one 'panch' witness did not even state the date on which their statements were recorded. "One of the panch witnesses is a mechanic, and he also repaired police's vehicles as he knew them," said Gadgil.
The identification parade was flawed as the witnesses already knew the name of the accused, he argued.
Lawyers of the other three accused are likely to make their arguments on Monday.