Fire crews are currently battling a blaze at a derelict industrial site in Retford.
The fire broke out at around 3pm in a storage shed at the former Co-Op Dairy site on Grove Lane.
Crews from Retford and Worksop expect to remain at the scene until 4:30pm.
The cause of the fire is thought to be suspicious as the buildings have been targeted by arsonists in the past.
Firefighters were forced to wear breathing apparatus while tackling the flames due to fears that there was dangerous asbestos in the roof space of the shed.