The car was initially hit by another vehicle on the rear side. As a result, the car driver lost control over the wheels and the vehicle swerved into an adjoining lane, he said.
At the same time, a truck, which was going towards Nashik from Vaijapur, collided with the car on Yeola-Vaijapur road at Khamgaon Shivar at around 7 am, the official said.
The police then took the five car passengers to a nearby hospital where three of them were declared dead before admission, the official said.
The two other injured passengers were admitted in a hospital in Nashik, he said.
The police have apprehended the truck driver, he said, adding that a probe is on into the mishap.