The body of a young man was found in Kattudai Kaattu region of Manipay on Saturday, reported Uthayan.
Local residents suspect the body is that of a youth who was reported missing three days previously, the paper said.
Twenty-six asylum seekers were deported back to Sri Lanka by Japan on Thursday, along side six to Vietnam.
The deportation of mainly men aged 25 to 64 has been condemned by human rights activists and lawyers as "inhumane",
A leaked United States Central Intelligence Agency (CIA) report warned of the negative effects that assassinations could have, recommending targeted strikes that could exploit leadership divisions and a combined counterinsurgency strategy.