Manoj, who hails from the district was arrested following a detailed investigation into the death of Bikari Dacua, a native of Odisha's Gunjam district, they said adding Manoj had killed Bikari for money.
Both of them used to work together as mason.
Bikari's body was found in a decayed state on July 7 in Chungam, Kottayam, police said.
Knowing that Bikari used to keep a minimum Rs 5,000 in his pocket, Manoj on July 2 invited him to a secluded place in Chungam under the guise of giving him a manual job.
Based on key evidences from CCTVs which showed Manoj and Bikari standing together, police arrested the accused.