Two people were injured when a pickup truck crashed through the guard wall on the eighth floor of a hospital parking building and plunged six floors, in Muang district on Wednesday night.
Witneses said the driver had earlier quarrelled with a woman in the parking building.
The incident happened at Maharat Nakhon Ratchasima Hospital about 7pm, police said.
The Toyota Vigo pickup truck, registered in this northeastern province, ended its plunge as a wreck in a passageway on the second floor of the building.
One of the injured was the driver of the vehicle. The other was a person buying food on the ground floor below, hit by a chunk of concrete from the shattered eighth floor wall.
Witnesses said the male driver had quarrelled with a woman inside the building.
He then got into his pickup, which then accelerated through a retaining wall on the eighth floor of the building and plunged to the second floor.
Police are investigating.