The dera karseva chief of the Nanakmatta Sahib Gurdwara in Uttarakhand was shot dead within the premises of the shrine by two motorcycle-borne assailants early this morning, police said. Baba Tarsem Singh was rushed to a hospital in Khatima where he died during treatment, Udham Singh Nagar Senior Superintendent of Police (SSP) Manju Nath told reporters. "We have clear (CCTV camera) videos of the assailants. They are both Sikhs," he said and added that they fled after the incident.