Following the publication of National Register of Citizens (NRC) in Assam, the Khasi Students’ Union (KSU) apprehended 30 non-tribals without ‘‘NRC documents’’ on September 2 from Mawiaban in West Khasi Hills District in Meghalaya, reports The Shillong Times. The KSU also found out that four non-tribals working in the industrial estate have no valid documents including NRC.