The 27-year old Chawla along with his friend Yogesh, 30, killed a 30-year old sex worker in Delhi G.B Road area on January 2. Both were arrested from Mehrauli Metro station.
According to police, on January 1, both Tannu and Yegesh went to the victim's brothel number 57 on GB Road. The next morning, while the victim was asleep, the duo stabbed her and fled the place.