Chandauti police station SHO Chandrabhanu said that the incident occurred when Ramesh Kumar along with his wife, daughter, niece and son was going to his in-laws place to attend the wedding of his brother-in-law in the auto-rickshaw.
The deceased has been identified as auto-rickshaw driver Upendra Prasad (35), auto-rickshaw driver and Ramesh Kumar's niece Shobha Kumari (14).
The injured were Ramesh Kumar's 12-year-old son Nitish Kumar and another person who was standing near the auto-rickshaw which had developed a snag.