Mumbai Police questioned Indian Institute of Technology Bombay (IIT-B) professor Suryanarayana Doolla for nearly 10 hours in connection with the alleged suicide of 22-year-old student Sahil Wakode, an official said on Saturday, PTI reported.

Professor Doolla, who faces allegations of harassment and caste-based discrimination from the deceased student’s parents, denied all charges during questioning on Thursday, the official said. His statement has been officially recorded.