The body of college teacher Khairun Nahar, 42, who married a 22-year-old student last year, was found dead at her rented flat in Boladipara area of the district town on Sunday morning, said police.
The deceased was an assistant professor of Philosophy department of Khubjipur Mozammel Haque Degree College in Gurudaspur upazila of the district.
Her husband Mamun Hossain , a second year student Bachelor Degree of Arts (B.A. Pass Course) of Nawab Siraj-Ud-Dowla Government College, was detained.
Though they got married on December 12 last year the matter came to light on July 31 this year. The couple faced huge cyber bullying on social platform Facebook over their marriage.
Abul Kalam Azad, inspector (investigation) of Natore Sadar Police Station, said they detained Mamun for interrogation in this connection.
Meanwhile, a team of Police Bureau of Investigation (PBI) inspected the scene and collected samples from the flat, said he.
Mamun claimed that Khairun committed suicide by hanging from a ceiling fan with her scruff. Later he brought down her body by setting fire on the scruff as he found nothing to cut it off, said the inspector.
Besides, caretaker of the house Khalil told the police that Mamun came out of the house around 2:00am and returned after an hour.
He also came out of the house in the early morning and called the caretaker informing that his wife Khairun committed suicide.
Subsequently, the caretaker informed the matter to the house owner putting Mamun under lock and key in the flat, said the police officer, adding that on information, they recovered the body from the flat.