Updated On: 29 December, 2015 12:40 PM IST | | Shiva Devnath
<p>Unhappy with the answers they have got from Chintan Upadhyay about the murder of his wife and her lawyer, police are considering asking court's permission to conduct these tests</p>

Even a week after his arrest in connection with the murder of his estranged wife Hema Upadhyay and her lawyer, artist Chintan remains a tough nut to crack, said sources in Mumbai Police, which is now considering another method to get answers — brain mapping and narco analysis test.