The deceased was identified as Mozammel Haque, 62. He used to practice in Natore Court.
Quoting family, Shahadat Hossain, officer-in-charge of Rajpara Police Station said Mozammel, who had no child, locked the door from inside after a family feud in the evening.
His wife, also a teacher of Rajshahi College, informed police after failing to convince her husband to open the door.
Later, police recovered the body hanging from a fan after breaking the door and sent it to Rajshahi Medical College Hospital morgue for autopsy.
The body was handed over to the family early Saturday after autopsy, the OC added.