CCTV footage shows the terrifying moment a man set fire to a family's front door in Meadowsweet Road, in Hamilton, Leicester while they were inside.
The suspect is seen entering a family's front yard and walking up the the door. He throws petrol to the door and sets fire to it.
As flames explode from the door, the man runs away.
The family say he had thrown a jar, which they believed contained a flammable liquid, at the door a few minutes before the attack, but it failed to ignite.
The fire brigade were called but family inside managed to put out the flames with wet towels. They say they have no idea who the suspect is or why he has did this.
If anyone has information which could help investigations they are being asked to contact Det Con Garside at Leicestershire Police on 101.