A 250-plant cannabis farm was uncovered after a good Samaritan neighbour reported a broken window on an unkempt property.

Officers discovered the drugs farm after a neighbour in Colne Road, Burnley, reported that she was concerned over the unsecured house.

Last night police were still hunting who was behind the factory, despite keeping watch on the property overnight.

Officers initially visited the house on Thursday afternoon, where they looked through the window and spotted cannabis plants growing inside.

The house had been guarded by officers all night, in preparation for a search warrant being executed under the Misuse of Drugs Act.

This was eventually carried out on Friday afternoon.

Detectives have also conducted house-to-house inquiries in a bid to find out more about the terrace property's recent history.

A Lancashire police spokesman said: "The warrants were executed on the property in Colne Road.

"We can confirm that 250 plants have been found at various stages of growth.

"We can also confirm that hydroponics equipment has also been found at the property.

"A neighbour in Colne Road reported the incident to us because of a broken window.

"We were unable to establish who broke the windows and an officer attended the property.

"A lot of the windows were covered and the officer saw through the window what appeared to be a cannabis factory. A search warrant was then obtained."

The discovery is the latest in a string of homegrown cannabis factories to be uncovered in Burnley and Pendle by police.

Back in September Viet Dinh, 27, was jailed for being the caretaker of a drugs factory in Mary Street, Burnley, which was said to be East Lancashire's largest- ever cannabis factory.

Around 1,200 plants were uncovered, with an estimated value of £250,000.

Dinh was thought to have been working for a Vietnamese underworld gang.