Agra, Oct. 25 -- A father and son lost their lives, while the mother sustained injuries in a road accident near Nagla Padam village under the limits of Chandos police station in Aligarh district on Thursday. The family was travelling on a motorcycle when an unidentified four-wheeler hit them and fled the scene. The deceased have been identified as Santosh Singh ,47, and his 21-year-old son Abhishek . Abhishek, who was riding the motorcycle, died on the spot. His father, Santosh Singh, and mother, Rajkumari Devi ,45, were injured and taken to hospital, where Santosh Singh later died during treatment. According to police, the family was returning from Ballabgarh in Haryana when the accident occurred. An investigation is underway to trace the vehicle involved....