Detectives from Reactive and Organised Crime are appealing for information following an arson attack in the Summerhill Brae area of Banbridge during the early hours of Saturday 30 April.
Police received a report of a car on fire at around 2.40am. Officers attended and found that a car had been set alight.
The fire had also spread to a house, causing damage to the vehicle and the dwelling.
A man and woman and their young child who were in the house at the time were not injured.
Detective Inspector Gawley said: “We would like to hear from anyone who witnessed the incident or who noticed any activity in this area in the hours prior to this incident. We can be contacted on 101.”
If you prefer to provide information without giving your details you can contact the independent Crimestoppers charity anonymously on 0800 555 111.