The throat-slit body of a missing youth was found in Ghoraghat upazila of the district on Friday.
The deceased was Md Ratan Mia, 30, son of Afzal Hossain of Sultanpur village in Gaibandha's Palashbari upazila.
Amirul Islam, officer in charge of Ghoraghat Police Station, said the youth went out of home on Thursday afternoon and since then he remained missing.
Informed by locals, police recovered the body from a maize field at Gobindapur village in Ghoraghat on Friday evening and sent it to M Abdur Rahim Medical College Hospital for autopsy.
An eye of the victim was gouged out, said the OC, adding that criminals might have killed the youth over previous enmity.