Kolkata: Mystery shrouds the death of a school teacher whose body was found lying inside his house. The incident took place at Surjya Nagar area under ward number 4 of Alipurduar Municipality. The victim, Sanjay Shaiba, was a physical education teacher in a higher secondary school. The victim had been staying in the house for the past few months while his wife stayed with her two daughters separately. Locals found the victim lying in an unconscious state. A suicide note has been recovered in which he has blamed his wife for the incident. He alleged that he had to meet her demands for which he had to borrow money. A probe has begun. The body has been sent for post-mortem.