WELLINGTON, Jan. 2  -- New Zealand Police on Friday pledged to track down troublemakers who deliberately planned a riot at a popular New Year festival that ended with 63 people arrested and 83 injured.

Organizers have said they are considering the future of the BW Summer Festival in the wine-producing town of Gisborne, on the east coast of the North Island, after the event ended in alcohol- fueled violence on New Year's Eve.

As pictures emerged of the violence including tents being set alight and festival-goers pelted with full bottles and cans police appealed for anyone with video of the riot send it to send it to them.

"Our investigations into the incident are continuing and it doesn't stop when people have been arrested. We want to see as much footage as possible so we can identify those who took an active part in the riot," Senior Sergeant Steve Sutherland said in a statement.

Police had been viewing numerous videos posted on media and social media sites and it was likely many more people had recorded parts of the riot on their cellphones.

The BW festival is held in conjunction with the popular Rhythm and Vines annual music festival and around 20,000 visitors descend on Gisborne for the two events at the turn of each year.

Police said about 7,000 people had turned up at the BW festival when the riot broke out at about 5.30 p.m. on New Year's Eve.

Police and security personnel battled for more than three hours to bring the situation under control.

On Thursday, police said agitators had started the trouble by pushing over a fence between two campsites and torching tents, triggering a "mob mentality" among other festival-goers.

"This was an intentional riot that was fueled by alcohol. It was obvious a plan had been put in place by the main agitators, which quickly spread through the campgrounds. We used every available police resource to try to keep control of the crowds," Inspector Sam Aberahama said in a statement.

Seven of the 83 injured were taken to Gisborne Hospital with serious injuries, according to St John Ambulance.

St John regional manager Stephen Smith said in a statement that most of the injuries were from projectiles being thrown, while other people were injured during crowd surges.

The 63 people arrested at the event would face a variety of charges, including disorderly behavior, assault and assault with a weapon, and most are to appear in court on Jan. 18 and 19.