Guernsey Police are investigating what they're calling a "spate" of damage and tampering to vehicles around Le Courtil Portier Estate in St Andrew.
A grey car, parked outside the estate had a deep scratch on the bonnet, while another suffered "extensive damage". Both vehicles were left with raised windscreen wipers, police said.
Residents and members of the public are asked to be vigilant and report any suspicious activity to Guernsey Police.
Officers said the damage occurred between 19:00 on Saturday and 06:30 on Sunday.