Police arrested five men and seized sound equipment after disrupting a rave near Grimston.
Officers were called at around 7.30pm last Saturday after an advertisement for the event was spotted on Facebook and there were further calls from residents with complaints about the noise.
An illegal event attended by more than 600 people was discovered at Massingham Heath.
Around 150 vehicles were at the site and the event was monitored throughout the night.
Additional resources, including specially trained police support units, attended and the rave was disrupted last Sunday.
Three men, aged 25, 28 and 31, were arrested in connection with organising the event while two other men, aged 20 and 33, were arrested at the scene on suspicion of drug driving.
The men have been released while investigations continue, the police said this week.
Temporary Assistant Chief Constable Nick Davison said: “A significant policing operation was held today to ensure the event was disrupted and closed down safely, while securing evidence with a view to prosecuting organisers.
“The action taken falls in line with our robust approach to tackling such events.
“Raves, not uncommon at this time of year, can be very disruptive for local residents and landowners while the presence of hundreds of people and vehicles can also have a detrimental impact on the environment.”