POLICE have discovered a large cannabis-growing `factory' in Huddersfield.

Officers got a warrant to raid a four-storey house in Armytage Crescent, Lockwood, on Tuesday evening.

They had to force their way in and once inside discovered cannabis growing in five rooms.

The hydroponic set-up included professional heating and air extraction units. Police seized 146 maturing plants and 80 seedlings.

The smell of cannabis in the street was said to be overpowering.

No-one was arrested and inquiries are continuing.

Anyone with information about drugs and drug-dealing should contact Dob In A Dealer via Crimestoppers on 0800 555 111.