A teenage thug will be sentenced next month after a brutal attack which left a Wicksteed Park security guard with a skull fracture.
The 15-year-old from Burton Latimer - who cannot be named for legal reasons - was convicted at Wellingborough Magistrates' Court this week over the assault at the Kettering park.
Police were called on November 7 last year after the incident, which took place at about 7.50pm when the park was closed.
A security guard was on patrol when he saw two boys inside the grounds and challenged them, asking them to leave.
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But the guard, a man in his 40s, was then punched and hit around the head before being kicked in the ribs while he was on the floor.
He suffered a broken jaw and a skull fracture, a police spokesman said.
The Burton Latimer boy was later charged with wounding without intent, an offence so serious it carries a punishment of up to five years in prison for an adult.
He pleaded not guilty but was convicted by magistrates.
The boy was granted conditional bail so a pre-sentence report can be carried out ahead of his sentencing next month.
He is banned from entering the grounds of Wicksteed Park or contacting the victim as part of his bail conditions.
A second boy who was arrested over the incident was released with no further action.