In the first accident, Radiologist Ashish Misra (40) was killed, two other doctors Dr Amit and Dr Munendra and two women were injured, police said.
They were coming from Ghaziabad to here when the Scorpio they were traveling by overturned at Chatta falling under Chhatta Kotwali, they said.
While Misra died on the spot, other two doctors were admitted in district hospital with serious injuries, police said.
The condition of two injured women, admitted at KD Medical college, is stationery, police added.
"Arjun was admitted to a local hospital where his condition is stationery", police added.
The truck driver managed to flee with the vehicle, police said.