Detectives from Saint George Criminal Investigation Branch (CIB) are appealing for witnesses, particularly anyone with phone vision, following an assault at the Junior Rugby League Carnival at Rowden Park on June 27.
Initial investigations indicate at approximately 2.20pm, an altercation occurred, and a 15-year-old boy sustained non-life-threatening injuries.
Police are appealing to witnesses, particularly anyone who filmed the incident on their phone, to come forward.
Investigations are continuing.
If you have information for police, contact Policelink by providing information using the online suspicious activity form 24hrs per day at www.police.qld.gov.au/reporting or call 131 444.
Report crime information anonymously via Crime Stoppers. Call 1800 333 000 or report online at www.crimestoppersqld.com.au.