Thames Valley Police is appealing for witnesses to come forward, including a specific witness, following an incident on Friday, October 28, in Reading.
Officers were called to the Sportsman pub, Shinfield Road, where two men were found with serious injuries, believed to have been stabbed.
They were taken to hospital, where they remain in a stable condition.
Six men, aged between 18-23 years old, all from Reading, were arrested in connection with the incident and have all been bailed.
Detective Inspector Laura Corscadden, of Force CID based in Reading, said: “We continue to investigate this incident.
“We are appealing for a specific witness to come forward who we believe was walking along Cedar Road at 10.44pm on Friday night, towards the Sportsman pub.
“She is white, slim build, with dark hair worn up, wearing a long black coat, a black cropped top, grey joggers/trousers and white trainers or shoes.
“We believe this person may have witness information and we would ask them to come forward as a potential witness by calling 101, quoting reference 43220486197.
“We would also ask anyone else who has information that has not yet come forward to please also get in touch.
“Or, if you do not wish to speak to the police, you can call the independent charity Crimestoppers on 0800 555 111.”