Officers investigating two attempted arson offences on the same night in Hemel Hempstead have released an image of a man they would like to speak to as part of their enquiries.
They happened on Tannsfield Drive just after 8.40pm on Monday, April 16.
An offender first approached a Skoda Octavia, which was parked on the driveway of a property, and poured petrol on the bonnet.
They then walked up to a second car, a silver BMW, which was parked on an adjacent driveway, and also poured petrol on its bonnet before making off in the direction of Ellingham Road.
If you can identify the person pictured, or have any further information that could assist the investigation, please report information online at www.herts.police.uk/report or call 101, quoting crime reference number D1/18/3174.
Alternatively, if you have any information about this incident you can contact the independent crime-fighting charity Crimestoppers anonymously on 0800 555 111 or through their Anonymous Online Form at www.crimestoppers-uk.org. No personal details are taken, information cannot be traced or recorded and you will never need to go to court.