Officers have released footage of a man they wish to identify following a number of deliberate fires.
There have been 14 incidents since August.
Many of the linked incidents have involved hedges and foliage close to properties and all have taken place in neighbourhoods in the early hours of the morning.
Some of the areas targeted include Stoke Hill, Summerway, Whipton and Pinhoe.
Pothole damage claim for every seven miles of road
Nearly 1,200 claims against council
Earlier kick-off for Devon derby
Match will get underway at 12.30
Exeter Dryden Road consultation reopens
The deadline for responses has been extended
Devon teenager charged after Somerset stabbing
Man attacked on street
Two Plymouth towns set for major boost
Residents to call the shots
Could more Dartmoor car parks charge prices?
There are only a small number at present
