At least six people were killed and 13 injured when a speeding jeep collided with an oil tanker on the Sonipat-Rohtak road on Tuesday morning, police said.
The injured were rushed to a hospital in Sonipat.
A police official said in Sonipat that the accident took place near Gohana township, 20 km from Sonipat.
The injured passengers told police that the jeep that they were travelling in was a taxi that had been overloaded by the driver.
"Our preliminary enquiry has revealed that the driver of the ill-fated jeep was racing with another jeep-taxi to pick up more passengers and his speeding vehicle collided with an oil tanker coming from the opposite side," the police official said.
Visibility was low due to foggy conditions, he added.