City and Holbeck CID have released CCTV footage on YouTube of an arson in Morley as part of an appeal for witnesses and information.
A white Ford Transit van was set alight outside a house on Corporation Street at around 11.05pm on Saturday, 11 June.
The van was completely destroyed and the house also suffered heat damage.
The residents were not in the house at the time.
CCTV footage recovered by detectives shows someone approach the van and set something alight, before what is believed to be a small explosion. The person responsible then runs from the property.
Officers believe that it is possible that the person responsible may have suffered injuries in the incident.
A 32-year-old man has been arrested in connection with the incident and is on bail pending further enquiries.
Anyone who witnessed the incident or has information which can assist enquiries is asked to contact DC Damian Hunt via 0845 6060606 or Crimestoppers anonymously on 0800 555 111.