Continuing drive against drug peddling activities, Dehradun police have arrested on Monday four persons, including a retired ITBP inspector, from Clement Town and Vasant Vihar who were allegedly involved in supplying drugs to youths in the state capital . The quartet was charged under sections 8, 15(2), 29, 60, 61 and 62 NDPS (Narcotic Drugs and Psychotropic Substances) Act. The retured ITBP inspector was identified as Ram Singh from Rajasthan who is currently living in Indranagar. Police recovered 337 grams hashish from his possession. In course of interrogation, Singh is said to have admitted his offence while saying that he addicted to hahish following his retirement in 2001 from ITBP. later, he started selling hashish among the youths while also running a provisional store in Indranagar area. In another incident, Clement Town police arrested three persons identified as Manjeet Singh Negi, Sonu Rathore and Manish Panwar, residents of Patelnagar. Police have recovered 102 gram hashish from Manjeet, 5.5 gram smack from Sonu and 6.0 gram from Manish.