Two vehicles have been taken by joyriders in Jersey in the past week.
Police are investigating the offences which occurred in St Saviour and St Helier.
They say, in both cases, the vehicles were left unlocked with access to the keys.
In a social media post, Detective Chief Inspector Chris Beechey is appealing to islanders not to help the joyriders do it again.
"Whilst we are working hard to investigate, and have a developing idea as to who is responsible, let’s please not help them to commit any further offences. These crimes take up hours of police time and are entirely preventable.
Jersey is and feels safe, and that’s something of course that we all value. Please lock your vehicles, remove your keys, and keep valuables out of sight to avoid opportunistic crime."
Anyone who has seen anything suspicious that could help officers with their enquiries is asked to report it.
Parked cars damaged in Victoria Avenue crash
L'Ecume II: Lewis Carr jailed for 20 months for fatal collision at sea
Guernsey's former Chief Minister admits making indecent images of children
Minister approves 42 sheltered homes at nursing home
Jersey potato farm to be the site of Channel Islands' largest roof solar array
Emergency work on Bagot Road due to suspected gas leak
Jersey court to allow sentencing remarks to be filmed
St Saviour to get new public park
