Dharmasthala crime probe: Newly appointed SIT head Chethan Singh Rathor met the victim's mother and inspected the location where the body was found. Mangaluru: Newly appointed SIT chief Chethan Singh Rathor arrived at the SIT office in Mangaluru on Monday.He held discussions with Kusumavathi, mother of Sowjanya, as part of the reinvestigation into the rape and murder of the 17-year-old girl in Dharmasthala in 2012.