A front door was set alight in an arson attack at a flat in Sheffield.
The door of the property in Whinacre Close, Batemoor, was found burning at 11.40pm on Sunday.
Nobody was injured.
A South Yorkshire Police spokeswoman said: "Emergency services were called to a property in Whinacre Close, Batemoor, following reports the building was on fire.
"Nobody was injured but the door to the building was damaged.
"Enquiries are ongoing."
Witnesses should call South Yorkshire Police on 101.
BREAKING NEWS: Sheffield Council's deputy leader Leigh Bramall resigns
Terror exercise: Police "nullify" Meadowhall "attackers" armed with simulation explosives and firearms
Sheffield landlord harassed tenant by bombarding him with texts
Rat poison warning to pet owners in Sheffield
Sheffield residents warned to be aware of "severe" terror threat after Meadowhall terrorism drill
Dates announced for giant inflatable obstacle course and soft play area for ADULTS that's coming to Sheffield
South Yorkshire hotels allowing men to check into rooms with teenage girls
Download The Star's mobile app now for FREE
Sheffield United: Get all the Blades stats
Sheffield Wednesday: Get all the latest Owls stats