An FIR was lodged against the popular YouTuber, Khan Sir, 6 students, and other unidentified persons on Thursday, 27 January, for inciting a mob of students that set a passenger train on fire, indulged in vandalism, and damaged railway property in Bihar. Following this, Khan Sir is said to have gone underground along with five other teachers of his private teaching institute.The incident took place with the students in Bihar protesting against the Railway Recruitment Board's (RRB) two-exam policy. The Railway Ministry, on Wednesday, 26 January, suspended the Non-Technical Popular Categories (NTPC) and Level 1 exams.Some protestors who were taken into custody revealed the name of Khan Sir, who provides coaching for competitive examinations and has gained popularity on Youtube for his unique style of teaching. Source: The Quint