A teenage girl walking home at night was assaulted by at least three youngsters in a dark Kaikohe park.
Sergeant Kevin Milne said the 16-year-old victim was grabbed by the hair and punched twice as she walked through Lindvart Park about 6.30pm on Tuesday.
Mr Milne said three boys, believed to be aged 14-17, were responsible and appealed for public help to catch them.
"This was a random and totally unprovoked assault on a young girl walking home. She was very upset by the experience," he said.
Mr Milne wanted to stress there was no sexual aspect to the attack.