Her husand had filed a missing person complaint on February 20, police said.
Assistant Superintendent of Police P S C Kalyan said villagers of Senmmanahalli, 18 km from here found a gunny bag with a leg sticking out on the road on Feb 26 and informed them about it.
Police found the highly decomposed body of a woman and were not immediately able to identify it. A special team constituted to trace her identity collected details of recent missing cases from police stations in neighbouring districts Krishnagiri, Tiruvannamalai, Vellore and Salem and identified the woman.
The man has confessed to the murder, police said, adding the jewellery and the car used have been recovered,
He was produced before the Judicial Magistrate Court-1 here, which remanded him to 15 days judicial custody.