The incident took place late last night near Rupabali Reserve Forest under Sadangi Range when two groups of elephants came across each other, the officials said.
While one group belongs to the Sadangi Range, the other was on its way from Kapilas forest, P K Sahu, Divisional Forest Officer (DFO), Dhenkanal said.
When the groups met, a fight took place between two tuskers and the calf was believed to have been killed in the melee, Sahu said.