An unidentified man scaled into a house in Erukkampattu village and stole a four sovereign gold chain from a 82-year-old woman on Wednesday.
Police sources said a man jumped into the house of Manonmani, 82, and held her at knife point. Besides the chain, the thief tried to snatch her gold bangles, but the victim raised an alarm.
Her son, Meganathan, who was sleeping in another room came to her rescue. The Pernambut police have registered a case and further investigations are on.