Chino police said the vehicle struck the pedestrians in the parking lot at 5540 Schaefer Ave. Authorities said an elderly man reversed from his parking spot at a fast speed, striking six women.
The car then continued and crashed into a building next to a church.
Officials said two women were killed and four suffered serious injuries. The driver and his passenger also sustained non-life threatening injuries, according to police.
"The driver and his wife, who was a passenger in the vehicle, were also transported after complaints of pain," said Lt. Kevin Mensen with the Chino Police Department. "We do not believe that any alcohol or drugs played a part in this collision."
The incident was not an act of terrorism, according to authorities. Detectives said their investigation into what sparked the crash was ongoing.