The main accused would randomly call girls, introduce himself as ‘Ranjana madam’ and tell the students that they have been selected for government scholarships
source https://www.thehindu.com/news/national/man-uses-voice-changing-app-to-pose-as-woman-professor-rapes-7-girls-in-mp/article68215820.ece
source https://www.thehindu.com/news/national/man-uses-voice-changing-app-to-pose-as-woman-professor-rapes-7-girls-in-mp/article68215820.ece