A fire that engulfed a building at RAF Upwood is believed to have been started deliberately.

Crews from St Ives and Ramsey were called to the blaze on Monday shortly before 7pm where they found a derelict building ablaze at the site.

Wearing breathing apparatus, firefighters used a hose reel to extinguish the fire, before returning to their stations by 7.30pm.

An investigation led by the fire service determined the cause to be arson. It is the latest in a long history of arson attacks at the site, which has been targeted on dozens of occasions in recent years.

Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111