The accused, Chinnapparaj (49), was an agricultural labourer and he had frequent quarrels with his 40-year-old wife over her illicit relationship with a local man since the last few months, police said.
Despite her husband's warning, the woman continued her relationship.
Chinnapparaj found his wife missing from the house last night and surmising that she was with her paramour, waited with a sickle, chased and killed her as she was returning home about 8.30 AM today, police said.