"The accident occurred at around 8.30 AM when the driver of the car was trying to overtake a vehicle and collided with the bus coming from the opposite direction," SHO (Makhu) Jaswinder Singh said.
Police said the incident may have occurred due to dense fog.
An Amritsar-based family was travelling to Ludhiana in the car, Singh said.
"The deceased were identified as Harpreet Singh (30), his wife Gagandeep Kaur (30), their one-and-a-half-year-old child Sehajdeep Singh and one Sukhwinder Singh," he said.
The injured were admitted to Faridkot hospital, Singh said.
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