A BLAZE this afternoon which destroyed a caravan used by site security staff is being treated as arson.

Youths were spotted in the area, behind Dalton Mills, Keighley, at the time of the fire.

The alarm was raised by the security staff.

Firefighters from Keighley and Bingley were called out just after 3pm to tackle the blaze.

Two hose reels were used to bring the inferno under control, and one breathing apparatus set was worn.