The police, which heaved a sigh of relief over the court order giving death penalty to the four convicts, said it will incorporate the "lessons" learnt from the case in the training module for its personnel for use in other cases.
"This verdict has done two things, number one, it has sent a message of deterrence to the criminals and number two, it has also sent a message of greater belief for the common man in the whole criminal justice system," said Joint Commissioner of police (South-Western) Tajender Singh Luthra.
"We gathered DNA samples from nail scrapping and developed dental marks from the bite marks. I think it is the first case in which Odontological forensics -a way of identifying people by their teeth - was used.
"We had sent the samples to an expert in Dharwad, Karnataka from where we got positive finding which was produced before the court as evidence," he said.
He said, "The most important point for us today is to continue it further both in security and for successful prosecution so that it can act as a deterrent.