The brother of heavyweight boxer Joseph Parker has been released after being detained in Chicago following an alleged assault at O'Hare International Airport.
It is understood John Parker, a former professional boxer, allegedly attacked at least one member of the public after he was removed from a Chicago to Los Angeles flight due to a ticketing issue.
He was in transit returning from his brother's victory against Alex Leapai on Sunday in Providence, Rhode Island.
It is believed the 25-year-old has since been released by police to family members but it remains unclear whether he faces any charges.