An incident in which a group of people, including a 4-year-old, were pepper-sprayed by police in the US was just a cultural misunderstanding and no one will be charged, prosecutors say.
It was reportedly the first time Utah police had seen a haka after fans at an American high school football game performed the Maori challenge in October last year.
A group of relatives of a player for the Roosevelt (Utah) Union High football team was attacked with pepper spray by police officers in Roosevelt, Utah, while performing the haka shortly after Uintah's 17-14 victory.
The group was told to move after reportedly blocking the exit from the field and but instead began the haka instead.
It was then that police started spraying.
"I've never seen anything like it," Union fan Jason Kelly told the Deseret News. "It was totally unprovoked."
The pepper spray spread far beyond the performers, reaching players and fans, including a dozen people from a single family, one aged 4.
After an internal police investigation cleared the officers of misconduct, Uintah County Attorney G. Mark Thomas opened an investigation at the request of the Utah chapter of the American Civil Liberties Union, which claimed the police report was "anything but objective".
Mr Thomas today released a 21-page report stating there was insufficient evidence that either the dancers or the officers committed a crime, the Salt Lake Tribune reported.
"Witnesses and participants of the event each experienced the events having come from a different background or experiences,'' it said.
"This appears to have colored what they perceived and may account for some of the differences."
American Civil Liberties Union of Utah interim legal director Joe Cohn said the report showed the officers should be charged with assault.
He pointed to a statement attributed to one of them saying he fired the pepper spray after dancers ignored his command to "make a hole" in the crowd, the Tribune reported.
The haka has become popular with at least a dozen American football teams at US high schools, especially those with large numbers of Polynesians.