A man surrendered before a court after allegedly murdering his parents near Kadayanallur here on Tuesday. Police said, Sanmugathai, separated from her husband, was staying with her parents, Muthusami (65), and his wife Ayammal (55) at Mavadikal. Manikandan (32), was living on the first floor of the same building. Shanmugathai developed an affair with a distant relative. Manikandan murdered the aged couple for approving their daughter’s relationship.