Detectives are appealing for witnesses after a car window was smashed in a late-night attack in Towcester.
The damage happened at about 11.35pm on Sunday in Islington Road when the owner of the car heard a group of around five men and a woman arguing outside her home.
She then heard her car alarm go off and the arguing carried on.
When she went outside a few minutes later she saw the back window of her car had been smashed.
Police say the offenders were a group of young men wearing dark clothing. The woman had dark hair tied back in a ponytail and was wearing a white flowery dress.