!UPDATE!
An investigation of the fire has now been completed and it was determined that the cause of the fire was deliberate. Three teenagers were arrested on suspicion of arson offences and have since been bailed pending further enquiries.
At 3.51pm on Sunday (12) crews from Ampthill, Kempston, Bedford, Toddington, Luton, Biggleswade, Shefford and Leighton Buzzard were called to a large-scale fire at Agate House, a derelict care home, in Woburn Road, Ampthill.
At 00.52am on Wednesday (21) a crew from Leighton Buzzard was called to a caravan in Stanbridge Road, Great Billington.
Firefighters wearing breathing apparatus used a hose reel to extinguish the fire and a thermal imaging camera to check for hot spots. Scene safety was implemented by FRS and handed over to the Police.
The cause of the fire was deliberate.