Police said the deceased has been identified as Ashok Kumar (45) was principal of middle school at Gangapur village under Alamnagar block of the district.
"Kumar's body was dangling from a rope and a 'lungi' attached together from the ceiling of the room where he lived. He could have been murdered and then strung, but anything could be said with certainty only after forensic tests," said Alamnagar Station House Officer (SHO) Rajesh Ranjan.
The SHO said the body has been sent for postmortem to Madhepura Sadar Hospital and an FIR has been lodged in the incident.