Cronulla have vowed to conduct an investigation after a frightening incident soon after full-time on Sunday in which Chris Heighington's son was run over by a buggy on the field.

Players rushed frantically to lift the vehicle off three-year-old Rocco at the Monty Porter Stand end of Southern Cross Group Stadium after he was trapped under it minutes after the Sharks' 25-20 win over Gold Coast. The boy was carried away from the scene by Heighington and then his wife Sonya and assessed by paramedics in the Sharks dressing room, with the club reporting that he had a cut inside his mouth but appeared to be otherwise unharmed.

Heighington took to Instagram on Sunday night to say that his son was recovering from the ordeal.