It appears that the youth was about 20 years of age and was killed somewhere else, Bhagalpur Additional Superintendent of Police (ASP) Veena Kumari said.
"His body seems to have been brought to the airport campus and set on fire after pouring kerosene over it. The motive could be to hide the youth's identity," Kumari said.
A mosquito net and plastic strings have been recovered from the place of occurrence, she said.