The story emerged in Thai social media. University president Luedech Kerdwichai said he was sorry about the incident and apologised to the affected students and their parents.
He said an initial investigation found that some senior students poured candle wax on freshmen of the faculty of industrial technology early this month, after the deadline for hazing ceremonies ended on August 30. He confirmed the probe would find out who was involved and the case would be explained to the Higher Education Commission later.
Sam Sen Police superintendent Pol Colonel Monchai Sriprasert said a 19-year-old female student had filed a complaint on September 28 that she sustained the injury on September 4.
An unnamed student source at the faculty said the candle-wax burning was part of a blessing ceremony, not a hazing, and had been performed on many past generations.