Hundreds of pounds worth of damage was caused to a vehicle in Victoria Street, Tenby, after a chemical substance was thrown over it. The incident, which occurred sometime between 6 pm on Sunday and 5.40 the following morning, caused the paint to dissolve.
Police are advising motorists to always ensure they park their vehicle in well-lit areas.
Anyone with information is asked to contact PC 1045 Alex Jones at the town's police station on 0845 330 2000 or Crimestoppers on 0800 555 111.