POLICE have confirmed their involvement following a barn fire in Appley Bridge.
An appeal for witnesses has been after the blaze, which caused more than £100,000 worth of damage.
The smoke from the large fire caused disruption to commuters on the M6 motorway and flames could be seen from several miles away.
It broke out at around 9pm on Friday February 21, with 30 firefighters from both Greater Manchester and Lancasire Fire and Rescue Service attending the scene at Home Farm on Back Lane.
Police officers from both Lancashire and Greater Manchester were also called to the scene. Nobody was injured during the incident.
Detectives are now liaising with fire investigators to try to establish the cause of the blaze.
Detective Constable Paul Catterall, based at Wigan CID, said: “Fortunately no one was injured during this fire which has caused substantial damage to a working farm in the Wigan community.
“The farm, already working under unusually difficult weather conditions for this time of year, have suffered a further setback to their business based on the loss of the valuable crops and storage capacity.
“We are keeping an open mind as to the cause of the fire and are appealing to any member of the public to come forward if they witnessed any suspicious activity in the area of Back Lane, Appley Bridge, between the hours of 6pm and 8pm on Friday.”
Anyone with information regarding the fire are asked to call police on 0161 856 7124 or Crimestoppers on 0800 55 111.