Chatham-Kent firefighters faced extreme cold Friday night as they battled a fire in a field near Wheatley, where straw bales were on fire.

Wheatley, Tilbury and Merlin fire departments responded to the call on Cemetery Road around 10:30 p.m.

The fire caused about $4,000 damage.

The cause of the fire has not been determined, but officials are reminding the public that heaters need to be monitored while in use and they shouldn’t be in an area that is not continually occupied.