A caravan in Woodland Drive, Grantham, was set alight last night (Monday), leading to a police investigation.
A fire and rescue crew from Grantham was called to the small road off Alma Park Road at around 7.25pm, and went on to call in police at 7.50pm after the cause was determined to be arson.
Firefighters used one hose reel to extinguish the flames. The owner was not in the caravan at the time.
Anyone with information is asked to call Lincolnshire Police on the non-emergency 101 number, quoting incident 395 of February 24.