SHILLONG: The Director General of Bureau of Police Research and Development V. S. K. Kaumudi, has stressed on the need to adopt modern methods of scientific investigation and at the same time he threw light on the various training modules and facilities that are available within the country, which are being funded by the Ministry of Home Affairs. Kaumudi chaired a meeting at police headquarters on Friday attended by Meghalaya DGP R. Chandranathan and other senior officers.