A "lowlife" arsonist accidentally set fire to his trousers while he was torching two cars in the early hours of this morning.
In CCTV, recorded outside a home in a West Yorkshire village, the thug approaches a car on the driveway and starts to hit one of the windows, failing to smash it.
He then pours a flammable liquid over the roof of the car and flicks a lighter twice.
A burst of white light from the flames fills the screen, and when the footage is clear again both cars are well alight and the criminal is fleeing the scene – with his backside on fire.
The cars belonged to mum-of-two Laura Hunsley, who told Examiner Live she can no longer "feel safe at home" after the horrifying arson attack in Leymoor Road, Golcar.
The 30-year-old was asleep with her partner Sonny Milnes when the man approached their home at 2.15am.
He tried to break into the window of one car using a rock and when this failed he poured petrol from a can over both a red Honda Civic and a white Volvo on the drive, causing damage to the paintwork on both.
Laura, who has two boys aged two and six, said she has no idea why the arsonist targeted their property where they have lived happily without incident for the past four years.
She said: "I don't feel safe at home now, it doesn't bear thinking about.
"I woke up as my partner was at the bedroom window shouting at him. I wondered what was going on.
"I looked out and on our CCTV you can see him running away with his trousers on fire.
"Sonny then used a hosepipe to put the fire out.
"Clearly, he is some low-life who has nothing better to do at 2am."
A spokesman for West Yorkshire Police said: "Police were called at 2.55am today to a report of an arson attack by a suspect on two cars in Leyland Road in Golcar.
"An offence of arson has been recorded regarding the incident which happened at about 2.50am.
"Initial enquires are ongoing and anyone who has information is asked to contact Kirklees Police on 101 referencing crime number 13200591934."
Information can also be given to the independent Crimestoppers charity on 0800 555 111.