A man was rushed to hospital with a head injury after a fight broke out at a venue in the Baltic Triangle.
Merseyside Police could not confirm which venue the incident took place in when asked by the ECHO.
However, a spokeswoman for the force was able to confirm officers were called to Stanhope Street which runs through the Cains Brewery site and is home to a number of venues.
The spokeswoman said officers received reports of 'an altercation ' at a venue.
A 29 year old man was taken to hospital with a head injury, the severity of which is unclear. However, his condition is not thought to be life threatening.
Merseyside Police confirmed a 32 year old man was arrested on suspicion of Section 18 Assault and taken into custody to be questioned.
Emergency services attended the scene at around 5.05pm after 'reports of a fight' on Stanhope Street after two men were reportedly involved in an altercation inside a venue.
The Liverpool Echo sends newsletters on a wide range of topics – including our daily news bulletin, now going out three times a day.
There are others on what's on, politics, court news, Knowsley, Wirral, and arts & culture, as well as both Liverpool FC and Everton FC.
Signing up is free and it only takes a minute for you to get the biggest stories, sent straight to your inbox.
How to sign up for an Echo Email Update
1) Go to our dedicated newsletter page at this link.
2) Put your email in the box where indicated
3) Tick as many boxes as you like, for each newsletter you want.
4) Press Save changes and that's it!
Officers remain at the scene this evening while forensic enquires are carried out.
Detective Inspector Dave Jones said: "We're in the early stages of investigating this incident, and would appeal to anyone who was in the bar and saw what happened to get in touch with us as soon as they can.
"This must have been a shocking and unpleasant thing to happen while people are out enjoying themselves over the bank holiday.
"I'd like to reassure everyone that our officers are in the area and will be happy to talk through any concerns people may have."
Anyone with any information on this incident is asked to DM @MerPolCC or @CrimestoppersUK on 0800 555 111 quoting reference 730 of 31/05.
For the latest news and breaking news visit http://www.liverpoolecho.co.uk/news/.
Get all the big headlines, pictures, analysis, opinion and video on the stories that matter to you.
Follow us on Twitter @LivECHONews – the official Liverpool ECHO Twitter account – real news in real time.
We're also on Facebook/theliverpoolecho – your must-see news, features, videos and pictures throughout the day from the Liverpool ECHO.