A 22-year-old engineering student, nephew of Umaria Superintendent of Police (Police Training Centre) Ashok Shukla, was killed while his friend sustained grave injuries when their motorcycle overturned after hitting a speed breaker at Shivaji Nagar under MP Nagar Police station limits here on Tuesday night. Police said the accident took place when Sachin Shukla was going to leave his friend after observing a birthday party. On the way his motorcycle hit the bump and the duo fell from the bike. Sachin died on the spot after sustaining severe head injuries. Injured Sajal Rai was admitted to a hospital where his condition was said to be critical.