There have been around nine reports of similar incidents in the area over the past two months.

Police Sergeant Steve Hughes, of North Dorset police, said: “This behaviour not only causes damage to property, but also has financial implications on the victims.

“Thankfully in these incidents, the fires were extinguished quickly. However, these fires may lead to catastrophic results should they become out of control.

“I am appealing to anyone who may have witnessed what happened or has information about who was responsible to please come forward.

“A group of young people was seen near to the scene, but ran off prior to the arrival of emergency services. I would ask parents to please think about whether their child has come home acting suspiciously or smelling of smoke.

“Officers will be carrying out increased patrols in the area as the investigation into these fires continues.”

Anyone with information is asked to contact Dorset Police at www.dorset.police.uk, via email 101@dorset.pnn.police.uk or by calling 101, quoting occurrence number 55210142118. Alternatively, to stay anonymous, contact the independent charity Crimestoppers online at Crimestoppers-uk.org or call Freephone 0800 555 111.