Barbeques are not allowed on the council green spaces.
A plastic bin was destroyed after someone left a still-alight barbeque inside.
The ground was also damaged.
The area is a popular destination for families during the hot weather, and temperatures are expected to remain high this week.

Hinckley and Bosworth Borough Council issued a 'polite' reminder that barbeques are banned from their parks and green spaces.
Under the Facebook post one resident commented, "Such a beautiful place yet some don't seem to care about keeping it lovely"
Police are appealing for witnesses following fatal collision on Ashby Road in Hinckley
Appeal after large-scale fly-tip in Galley Common
Bradgate Park coffee shop turns around food hygiene fortunes after fly problems plague premises
£1.2m council house plan given green light after ‘horrible’ flats were blighted by anti-social behaviour
Hinckley entrepreneur wins rent-free shop and opens new store this weekend
Another HMO in Coalville could be given green light despite fears traffic and parking is an ‘absolute hazard’
Chaotic’ nursery told to urgently improve after toddlers found to be soiling themselves due to a lack of routine
£195k funding boost to protect victims affected by prisoner early release scheme
