Chilliwack firefighters were on scene at a barn fire on Chadsey Road and Yale Road early Monday morning.

The former chicken barn was venting smoke high into the morning sky as firefighters arrived at around 8:30 a.m. at the property near Duke’s Pub in Greendale.

According to witnesses, the barn had been converted into a licenced medical marijuana grow operation – a fact later confirmed by fire officials.

Flames could be seen billowing from the west end of the 120 metre structure. Firefighters from Halls 1, 3, 4 and 6 responded.

The interior of the barn was difficult to access and firefighting activities were restricted to the exterior of the structure. The barn was attached to a large utility building which fire crews were able to save. The barn was completely destroyed and although the bulk of the fire was under control by 1 p.m. crews remained on scene until 4:30 p.m. extinguishing hot spots.

There were no civilian or firefighter injuries.

The cause of the fire is still under investigation.

Watch www.theprogress.com for updates as they become available.