Emergency services were put under pressure in Dunedin last night with crowds of drunk students rioting in the city and clean up is still going on this morning.
A police spokesman said they faced 'major disorder' with a 'multitude' of fires lit and vehicles damaged.
Several police received minor injuries as they dodged bottles to arrest 69 people - 54 students and 15 non-students.
The fire service also came under attack as it dealt with more than 70 call-outs to car and rubbish fires.
Shift Manager Brian Sharp confirmed students were behind the trouble.
The disorder comes as hundreds of Canterbury University students end their colourful journey south to Dunedin in an event called the Undie 500.
Watch extended, uncut footage of the riot.
Warning: This video contains language and footage which may be offensive to some viewers.