Humberside Police helicopter Oscar 99 trailed two off-road motorcycles which were being driven illegally across Bradley Pitches.
Although there were games going on they did not encroach on the pitches.
However the police helicopter swooped down and followed them in the direction of Waltham.
The riders dispersed and the helicopter returned to its base at Humberside Airport following the incident at 2.20pm today.
No games were held up during the incident. It was witnessed by a lot of people gathered in the car park and by people on pitch touchlines.
