Arsonists destroyed eight lorries – each containing up to 300 litres of diesel.
Police have launched an investigation following the arson attack in Longstanton.
Emergency services were called to Mulberry Farm in Station Road at 1.40am this morning (22 March) with reports of a fire and multiple explosions being heard.
More than 20 firefighters attended to find eight lorries, each containing 250-300 litres of diesel, on fire.
An investigation is underway with detectives gathering CCTV, forensic evidence and carrying out house to house enquiries.
Detective Inspector Verity McCann said: “I would like to hear from anyone who was in the Longstanton area in the lead up to the fire who may have seen or heard anything.
“Please contact police, any information you have however insignificant it may seem, could prove useful.”
Anyone with information is asked to contact police online www.cambs.police.uk/report quoting reference 35/21427/23. Those without internet access are asked to call 101.
A spokesperson for Cambridgeshire Fire & Rescue said more than 20 firefighters, including crews from Cottenham, Cambridge, St Ives and Huntingdon, along with the water carrier from Ramsey, attended the incident.
“Firefighters arrived to find a fire involving around eight lorries and extinguished it using hose reels and jets,” said the spokesperson.
“They returned to their stations by 6am.
“The cause of the fire was deliberate.”
Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111, quoting reference 35/21427/23.