HINSDALE — An angry pregnant driver, a pistol, a car crash and a can of pepper spray all factor into an alleged weekend road rage incident that police are still sorting out.

“Charges are probably coming,” said Hinsdale Police Chief Todd Faulkner.

The Sunday morning incident started in Brattleboro, Vt., and spilled over into Hinsdale. A pregnant woman driving a Honda Civic said either the driver or passenger of a Subaru Forester threw a bottle at her car.

Faulkner is not releasing the names of the people in the cars as the investigation continues.

At the intersection of Brattleboro and George’s Field roads, the cars stopped and the drivers argued. That’s when the woman in the Honda allegedly rammed her car into the Subaru.

Faulkner said the Subaru driver got out of his car and went over to speak to the Honda driver, and that’s when the situation escalated.

Faulkner said the man was carrying a pistol when he went to speak to the woman, but it was holstered. Open carry is legal in New Hampshire. Faulkner said as far as he knows the man did not take the gun out of its holster.

“There’s no information that he used (the gun) in any way,” Faulkner said.

During the confrontation, the woman in the Honda got out a can of pepper spray and sprayed the man’s face, Faulkner said. Police say the man declined medical treatment at the scene, but the woman in the Honda claimed to have suffered some injuries. She was taken to a nearby hospital where she was treated and released.

Faulkner said his department is still trying to determine the facts before filing charges against anyone involved.