A major cannabis farm has been discovered in Huddersfield - when the house where it was growing caught fire.
Fire crews were called to the house in Sufton Street, Birkby, when a passer-by spotted smoke pouring from the building.
They found a severe fire inside, which burned through part of a floor.
Now police are trying to trap those who set up the cannabis growing operation and caused the fire.
Lighting and heating equipment overloaded the electrical circuits.
A large number of mature plants were recovered from the house and destroyed.
A police spokesman said: “This was a well-established cannabis farm and you can see that the electrics were overloaded, which can easily lead to a fire.
“Cannabis farms are illegal and also a fire hazard.”