Bhopal, Aug. 20 -- A class 12 student allegedly set a guest teacher of his former school on fire in Madhya Pradesh's Narsinghpur district after she filed a harassment complaint against him, police said on Tuesday, adding the accused has been arrested. The 25-year-old teacher sustained injuries and was referred to Jabalpur Medical College in a critical condition, they added. Suryansh Kochar, 18, was arrested in connection with the incident on Tuesday, and booked for attempt to murder under Section 109 of the BNS, said Sandeep Bhuria, ASP, Narsinghpur. "Kochar was a student of the school but he was expelled two years ago. He later enrolled in a government school in Kalyanpur and continued his study. He used to visit the school (of the guest t...