Maheswar Sethy, the BDO, has filed an FIR against the attacker, who has been identified as Upendra Moharana (35), the police said.
Moharana, a resident of Bhabanipur in Alipur panchayat of the block, barged into the BDO's office yesterday and assaulted him, a police officer said.
The sarpanch of Bari panchayat was also present in the BDO's chamber when the incident occurred, the officer said.
The youth had attacked him without any provocation, Sethy said.
The BDO was admitted to a local government hospital with face, neck and chest injuries, the police officer said, adding, an investigation has been initiated.