Having failed to make any headway in the investigations into the murder of renowned rationalist Narendra Dabholkar, the Pune police on Wednesday announced a cash reward of Rs 1 lakh to those providing substantial clues to the sensational killing that took place on the Omkareshwar brigade on Tuesday morning. The Rs 1 lakh reward announced by the Pune police is in addition to a cash reward of Rs 10 lakh announced by the Maharashtra CM.