UPDATE Wednesday
FOUR men are set to face court on Thursday after a brawl at a junior rugby league match on Sunday.
Police were called to the incident about 11.30am where a 35-year-old man and a 59-year-old woman were hurt.
Police have arrested four Logan men, aged 19, 24, 26 and 36, all charged with grievous bodily harm and assault occasioning bodily harm.
They are due to appear in Wynnum Magistrates Court tomorrow.
EARLIER
DETECTIVES are appealing for information into a brawl at a junior rugby league match involving a Wynnum club in Brisbane on Sunday.
A 35-year-old man and a 59-year-old woman were hurt in the fight in the match between Wynnum Manly Juniors and Logan Brothers, police say.
The altercation spilled from the stands onto the ground during the under-13s match about 11.30am at Kitchener Park.
Bayside patrol group's Detective Inspector Stephen Hollands said the investigation was ongoing.
"We are working through a large amount of statements and footage to determine the circumstances of the assault," he said.
"At this stage, we believe the assault was unprovoked and we are looking at multiple people who were involved in the altercation.
"Anyone with information or footage who hasn't already spoken with police are encouraged to come forward."
The 35-year-old man was treated in hospital for serious facial injuries while the 59-year-old woman sustained a minor head injury.
The Wynnum club took to social media after the fight.
"The Wynnum Manly Junior Rugby League Football Club would like to address the incident that occurred at Kitchener Park yesterday," a statement from the club said today.
"The Wynnum Manly Junior Rugby League Club board and staff are co-operating with Queensland Police and Rugby League Brisbane in its investigations.
"If you, or someone you know has any information, please send it to the club by email at admin@wynnummanlyjuniors.com.au, or you can send it by private message to this page.
"We are unable to comment on the events that occurred because the matter is now a criminal investigation.
"If you or someone you know has been affected by what happened yesterday, please reach out to the club. You can do this by email, private message or Rugby League Brisbane will be organising for support at the club.
"Please do not engage, comment on any posts, videos or discussions about this incident. We do not want to hamper the ongoing investigation."
A Go Fund Me page has been set up for medical expenses for one of the parent's involved in the incident on Sunday.
Queensland Rugby League said it was aware that spectators were involved in a brawl.
"Both RLB [Rugby League Brisbane] and the QRL acknowledge the serious nature of this incident and will ensure a thorough investigation and response in accordance with the game's rules and code of conduct, while respecting the matter is also under investigation by the police," a statement said.
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.