[A]t 4:49pm yesterday, Wednesday 27 September firefighters were called to a noticeboard which was well alight on the outside of a building at Tennis Centre, Bitts Park, Dacre Road, Carlisle.
A spokesman for Cumbria Fire and Rescue Service said: “The crew used water to put the fire out and the inside of the building was checked.
“It is believed that this fire may have been started deliberately.”
Anyone with information is asked to call Carlisle police on 101.