Two unidentified persons snatched a gold chain from a 70-year-old woman, G. Saroja, who was on her morning walk in Tirumangalam on Monday morning.
Police said the robbers followed the woman on a two-wheeler.
When she was walking in Jawahar Nagar at 6.15 a.m., they snatched her seven-sovereign gold chain.
Tirumangalam Town police are further investigating.
In another incident reported under Sellur police station limits, three-persons riding a motorbike yanked a gold chain, weighing over four sovereigns, from a woman, Anitha, on Sunday evening.
The police said the incident occurred on Kulamangalam Main Road when the victim was riding pillion on a two-wheeler with her husband M. Kalidoss.
Sellur police are investigating.