Goa, July 11 -- Nearly three weeks after 26-year-old Ketan Agarwal died after falling from Pune's Lohagad Fort, what was initially believed to be a trekking accident has transformed into one of Maharashtra's most closely watched murder investigations. While Pune Rural Police claim Ketan was murdered by his fiancee, Siya Goyal, and her alleged boyfriend, Chetan Chaudhary, securing a conviction will require far more than establishing motive.

Police allege that Siya, unhappy with her arranged marriage, conspired with Chetan to kill Ketan. Investigators have cited alleged meetings between the two, CCTV footage, phone records and an earlier failed attempt as evidence suggesting a planned murder. However, all these remain allegations that must...