A man was seriously injured in an early-hours brawl in Wantage market place, police said.
So far, three men have been arrested on suspicion of causing grievous bodily harm with intent.
The victim, a man in his 20s, remains in hospital after suffering 'significant' fractures to his face, eye socket and cheek.
In a witness appeal, DS Nathan Adby of Abingdon CID said: “This was a significant incident of disorder in the centre of Wantage, which involved a number of individuals.
“We have arrested three people and there is currently a scene-watch in place while our investigation continues.
“I am appealing to anybody who was in the area at the time of the incident and witnessed this to get in touch with Thames Valley Police.
“I would also urge anybody with any CCTV or dash-cam footage from the time of the incident to please check this and contact us if it has captured anything that can assist the investigation."
Thames Valley Police said the fight broke out between a group of men shortly after 3.10am this morning in Market Place, Wantage.
A knife was seen during the course of the brawl.
Two Wantage men, aged 22 and 24, and a 20-year-old man from Totnes, Devon, have been arrested on suspicion of grievous bodily harm with intent. They are currently in police custody.
The 22-year-old man has also been arrested on suspicion of affray and possession of an offensive weapon in a public place.
Mr Adbysaid: “I appreciate that incidents such as this will cause some concern in the local community, but the circumstances are being thoroughly investigated and a number of arrests have been made.
“There will be a continued presence of officers in the town centre while this investigation continues, and I would urge anybody who has any concerns to please speak to any of our officers or staff at the scene.
“Anybody with any information can also make a report online or call 101, quoting reference number 43220419844.
“Alternatively, for 100% anonymity, you can also call the independent charity Crimestoppers on 0800 555 111.”
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This story was written by Tom Seaward. He joined the team in 2021 as Oxfordshire's court and crime reporter.
To get in touch with him email: Tom.Seaward@newsquest.co.uk
Follow him on Twitter: @t_seaward
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