Delhi Police have arrested 21-year-old Amrita Chauhan, her ex-boyfriend Sumit Kashyap (27) and friend Sandeep Kumar (29) for the murder of 32-year-old UPSC aspirant Ram Kesh Meena. The trio strangled Meena, poured oil, ghee and alcohol on his body and used an LPG cylinder to stage a blast and fire. At first, the scene suggested electrical fault or AC blast.