"Police recovered the body of Mathew Dabi from a gorge near the village yesterday," East Siang SP D Arya said in a statement.
The cause of the death could only be ascertained after postmortem, he said.
Dabi's wife has appealed to the authorities to constitute a team of doctors to conduct postmortem as he died under mysterious circumstance.
The Galo Students Union (GSU) has questioned the district police for delay in starting the search operation and alleged that precious time was lost before the district administration started search operation from April 15 last.
No missing report was lodged with the Boleng Police by the polling team even as the team left Siine without Dabi, police said.