ARSONISTS broke into a locked up building during the day and set it alight.

Police were called to Heyford last Monday when criminals had forced their way into an empty 'secure' building and set it on fire.

See more: Police appeal after car scratched

It is thought the fire broke out between 4pm and 4.30pm.

Thames Valley Police are now appealing for anybody with CCTV footage of the area to come forward.

With information call 101 and quote the reference number 43190244009