Firefighters were called to a blaze after a sofa was "deliberately" set on fire, say fire services.
A crew from Preston attended the fire on a footpath by Burnslack Road at around 12.30am on 21 February.
The fire was extinguished using a hose reel.
Crew Manager John Simpson said: "We'd like to remind the public to dispose of rubbish in the correct way. Setting fire to furniture next to a public footpath is very dangerous and anybody passing by could have been seriously injured."