All passengers of the car were residents of Sambhal district who were on their way to Delhi.
Six people, including two children, were killed when their car skidded off the road and fell into a canal in Uttar Pradesh's Greater Noida, apparently due to fog, police said on Monday.
Five other occupants of the vehicle sustained injuries in the incident that took place around 11.30 pm on Sunday, they said.
"Altogether 11 people were on board the Maruti Ertiga. The car fell into the Kherli canal in Dankaur area. All 11 were taken to a hospital, where doctors declared six of them dead, while the remaining five are undergoing treatment," a police spokesperson said.
Prima facie, the accident appeared to have taken place due to low visibility caused by fog, the official added.
According to the police, there was one more car accompanying the Ertiga and all passengers were residents of Sambhal district who were on their way to Delhi.
The people have been identified as Mahesh, 35, Kishan Lal, 50, Neeresh, 17, Ram Khiladi, 75, Mallu, 12, and Netrapal, 40, they said.
Further proceedings are underway, the police added.