A man has died suddenly at the Hawke's Bay Regional Sports Park, near Hastings.
Police and an ambulance were called to the Percival Rd facility about 9am on Wednesday.
A witness at the scene said authorities were focusing their attention in the main grandstand area, where it's understood he died.
Police said the death looks likely to be related to a medical condition.
A park staff member said police and emergency services were already at the scene when an employee turned up for work at 9.15am.