A 3-year-old was reportedly taken to hospital after his fingers were stomped on and a 7-year-old had her face scratched.
The Egg Day Out was held across three locations in Auckland on Good Friday. It was organised by the Equippers church and sponsored by Cadbury.
A thousand eggs were to be dropped at each location from a helicopter for children to "hunt" and gather. All went to plan at the city and North Shore locations but in Manukau at the Vodafone Events Centre air traffic control prevented the chopper from flying over the site and the eggs were scattered by hand.
Equippers pastor Wilhem Schaafhausen told the Herald he had expected up to 5000 people to attend at each site, but on the day about 30,000 showed up. He said one of the problems at the event was the behaviour of many parents.
"A lot of kids were getting hurt ... parents were just running in and running over the kids. I was like 'oh my goodness' and my volunteers were blown away by the behaviour of the parents," he said.
After the event angry parents took to the Facebook page Egg Day Out to express their concerns. Most said they were disappointed about how other adults behaved.
They described other parents as greedy and abusive and said they were trying to get as many eggs as possible. Yvonne Pokotai-Ratana took her daughters to the event with some friends and their own kids. She said an adult set upon her younger daughter Yves to take any eggs she had collected.
"There was a point where the adults weren't allowed to access beyond, only the children. But arrogant adults ignored the commentator," she told the Herald.
"When the egg drop started the crowd of kids and adults rushed up the hill - most of whom I saw were adults being rough to others around them just to get the Easter eggs. My 7-year-old's face was scratched by an adult and she didn't even have an egg. Other children walking past were crying or even hurt."
A woman posted on the Facebook page that she ended up in the accident and emergency department with her young son after an incident at the event.
"Thanks for the A&E visit for my 3-year-old [after] getting pushed by adults and his fingers getting trampled on after egg ripped out of his hand," she wrote to organisers.
Mr Schaafhausen said a lot of planning had gone into the event and health and safety was "paramount".
- Anna Leask, NZ Herald